ClassID:

131241

E04F21/248 - CPC Classification

Classification description:

Implements for finishing work on buildings for laying flooring of masses made , e.g. smoothing tools; Rotary power trowels, i.e. helicopter trowels used by an operator walking behind the trowel, i.e. walk-behind power trowels

Recent Application in this class:
#1
20260106092
2026-04-16

SAFETY SWITCH FOR A BATTERY PACK POWERED TROWEL

#2
20260103903
2026-04-16

TROWEL ASSEMBLY

#3
20250357770
2025-11-20

POWER TOOL INCLUDING DUAL BATTERY PACK SEQUENTIAL DISCHARGE

#4
20250188753
2025-06-12

CONCRETE TROWEL

#5
20250052077
2025-02-13

CONCRETE TROWEL

#6
20240200343
2024-06-20

Concrete trowel

#7
20240120158
2024-04-11

SAFETY SWITCH FOR A BATTERY PACK POWERED TROWEL

#8
20240068178
2024-02-29

WORK MACHINE

#9
20240011291
2024-01-11

DECORATIVE CONCRETE WITH UNIFORM SURFACE AND METHOD OF FORMING THE SAME

#10
20230383551
2023-11-30

Mounting Adapter for Concrete Surface Processing Tools

#11
20230374740
2023-11-23

Cordless electrically-powered concrete screed

#12
20230366219
2023-11-16

BATTERY PACK POWERED TROWEL INCLUDING BLADE PITCH AND SPEED CONTROL

#13
20230313543
2023-10-05

SURFACE FINISHING TROWELS, SYSTEMS, AND METHODS THEREOF

#14
20230256557
2023-08-17

EASY-DETACHABLE GRINDING DEVICE FOR CEMENT WALK-BEHIND TROWEL MACHINE

#15
20230250651
2023-08-10

Battery Powered Hand-Operated Troweling Machine

#16
20230235577
2023-07-27

Mounting adapter for concrete surface processing tools

#17
20230123674
2023-04-20

Mini-concrete trowel attachment assembly

#18
20230117193
2023-04-20

COMPOSITE ABRASIVE ATTACHMENT ARTICLE FOR CONCRETE POWER TROWEL MACHINE

#19
20230080219
2023-03-16

Mounting adapter for concrete surface processing tools

#20
20220364375
2022-11-17

TOOL FOR THE MECHANICAL TREATMENT OF A CONCRETE FLOOR

#21
20220333315
2022-10-20

Cordless electrically-powered concrete screed

#22
20220307275
2022-09-29

METHOD AND ARRANGEMENT FOR THE TREATING OF A FLOOR SURFACE

#23
20220290448
2022-09-15

Concrete trowel

#24
20220268036
2022-08-25

CONCRETE TROWEL

#25
20220268035
2022-08-25

Concrete trowel

#26
20220251857
2022-08-11

Conjoining apparatus and rotary machine assembly comprising same

#27
20220001515
2022-01-06

RELEASABLE TOOL ATTACHMENT MEANS FOR POWER TROWELS

#28
20210317669
2021-10-14

Mounting adapter for concrete surface processing tools

#29
20210180340
2021-06-17

Thermal management system for a drive train

#30
20210047845
2021-02-18

Concrete surface polishing trowel and conversion adaptor

#31
20210040699
2021-02-11

CORDLESS ELECTRICALLY-POWERED CONCRETE SCREED

#32
20200318367
2020-10-08

Powered concrete finishing apparatus having annular working surface

#33
20200198091
2020-06-25

Tools for polishing and refinishing concrete and methods for using the same

#34
20200156214
2020-05-21

Tool attachment means for power trowels

#35
20200072291
2020-03-05

Drive coupler for drill output shaft

#36
20200071891
2020-03-05

Concrete screed power control linkage

#37
20200071890
2020-03-05

Cordless electrically-powered concrete screed

#38
20190270176
2019-09-05

Concrete Cleaning and Polishing Method and Solution

#39
20190234084
2019-08-01

Concreting tools

#40
20190226216
2019-07-25

Methods and devices relating to grouting

#41
20180355956
2018-12-13

Compartmentalized Riding Trowel Cvt Clutch Module

#42
20180202158
2018-07-19

Method of forming a decorative concrete structure

#43
20180051472
2018-02-22

Handle assemblies with vibration dampening assemblies for concrete finishing machines

#44
20170275896
2017-09-28

Grout Spreader

#45
20170239781
2017-08-24

Concrete cutting, polishing, and coloring treatment solutions and methods

#46
20150159384
2015-06-11

POWER TROWEL FASTENING ASSEMBLY

#47
20120163912
2012-06-28

Concrete trowel transport system

#48
20110268504
2011-11-03

Low-Emission Propane-Driven Power Trowel

#49
20110135388
2011-06-09

Concrete finishing apparatus

#50
20110104996
2011-05-05

FINISHING MACHINE

#51
20100150653
2010-06-17

BLADE PITCH ADJUSTMENT DEVICE

#52
20090297269
2009-12-03

Motor powered, pole-mounted concrete finisher

#53
20090274517
2009-11-05

Method and apparatus for finishing concrete

#54
20090214294
2009-08-27

Concrete finishing apparatus

#55
20090087264
2009-04-02

Cement heating and finishing machine

#56
20090028643
2009-01-29

Mounting adapter for concrete surface processing tool

#57
20080289842
2008-11-27

WALK BEHIND POWER TOOL VIBRATION CONTROL HANDLE

#58
20080219765
2008-09-11

Method and apparatus for finishing concrete

#59
20080193216
2008-08-14

Apparatus for finishing concrete

#60
20080152429
2008-06-26

Linear lost motion positioning mechanism

#61
20080101861
2008-05-01

COVER FOR ATTACHMENT ARM

#62
20080025794
2008-01-31

Power trowel attachment for a drill

#63
20070071553
2007-03-29

Floor surface finishing device

#64
20060207063
2006-09-21

Vibration dampening handle

#65
20060204336
2006-09-14

Power trowelling aggregate decorative stone

#66
20060160646
2006-07-20

Snap fit belt guard for power trowels

#67
20060006369
2006-01-12

Method of making and using a dynamically balanced walk behind trowel

#68
20050254897
2005-11-17

Rotating concrete finishing trowel

#69
20050254896
2005-11-17

Rotating concrete finishing trowel

#70
20050238429
2005-10-27

Surface finisher

#71
20050172457
2005-08-11

Vibration isolation machine handle

#72
20050141962
2005-06-30

Metal plate reinforced plastic trowel blade for power troweling

#73
20050100406
2005-05-12

Trowel gearbox brake

#74
20050100405
2005-05-12

Starter module for walk behind trowel

#75
20050100404
2005-05-12

Dynamically balanced walk behind trowel

#76
20050100403
2005-05-12

Guide handle for a manually steered machine