ClassID:

39328

B21K21/04 - CPC Classification

Classification description:

Making hollow articles not covered by a single preceding sub-group Shaping thin-walled hollow articles, e.g. cartridges

Recent Application in this class:
#1
20260001089
2026-01-01

Stainless Steel Spray Boom for Aerial Spraying

#2
20250242403
2025-07-31

HIGH-PRESSURE CARTRIDGE CASE

#3
20250027755
2025-01-23

Ammunition cartridge

#4
20240401919
2024-12-05

TWO-PART POLYMER AMMUNITION CASING

#5
20240042512
2024-02-08

Boron steel high-pressure cartridge case

#6
20230358515
2023-11-09

Polymer ammunition casing

#7
20230124564
2023-04-20

BASE PART FOR PRODUCING A CARTRIDGE CASE AND CARTRIDGE CASE, METHOD FOR PRODUCING A BASE PART FOR A CARTRIDGE CASE, AND METHOD FOR PRODUCING A CARTRIDGE CASE

#8
20220331820
2022-10-20

Stainless Steel Spray Boom for Aerial Spraying

#9
20220097124
2022-03-31

Boron steel high-pressure cartridge case

#10
20210148687
2021-05-20

Method of manufacturing a cartridge case

#11
20210129224
2021-05-06

Shell case design utilizing metal injection molding

#12
20210041211
2021-02-11

Pressed head

#13
20200318937
2020-10-08

Metal injection molded cased telescoped ammunition

#14
20200078848
2020-03-12

Method of hot gas forming and hear treatment for a TiAlNb-based alloy hollow thin-walled component

#15
20200056870
2020-02-20

Long cartridge case

#16
20190160511
2019-05-30

Method of manufacturing cup structure

#17
20180259309
2018-09-13

Long cartridge case

#18
20180065183
2018-03-08

Shell case design utilizing metal injection molding

#19
20180045370
2018-02-15

GAS STORAGE CONTAINER FOR INFLATOR AND PROCESS FOR MANUFACTURING SAME

#20
20170307343
2017-10-26

Cartridge casing

#21
20170028459
2017-02-02

Puck wear detection

#22
20160296995
2016-10-13

METHOD AND APPARATUS FOR FORGING A HARD DISK DRIVE BASE PLATE WITH AN EXTENDED HEIGHT

#23
20150174643
2015-06-25

Precision forged cartridge case

#24
20140083319
2014-03-27

Precision forged cartridge case

#25
20060112751
2006-06-01

Method for manufacture of a metal shell, and a cup designed to serve as a blank

#26
14214780
2016-06-07

Manufacturing process to produce metalurgically programmed terminal performance projectiles