F23N2041/02 - CPC Classification Index

#1

20210080122

2021-03-18

Coaxial gas valve assemblies including electronically controlled solenoids

#2

20200224928

2020-07-16

Heater structure

#3

20200056793

2020-02-20

HVAC MONITORING APPARATUS AND METHOD

#4

20190376687

2019-12-12

Systems and methods for valve and/or combustion applicance control

#5

20190338950

2019-11-07

AIR HEATER

#6

20190277499

2019-09-12

Control system and method for a solid fuel combustion appliance

#7

20190249882

2019-08-15

Flame control systems and methods for furnaces

#8

20190203936

2019-07-04

Closed-loop programming and control of a combustion appliance

#9

20190017703

2019-01-17

Flame rod

#10

20180245819

2018-08-30

Method of and system for flame sensing and diagnostic

#11

20180010823

2018-01-11

Method of and system for flame sensing and diagnostic

#12

20170363325

2017-12-21

Stove

#13

20170211823

2017-07-27

Heating furnace using auto heating commissioning mode

#14

20170167726

2017-06-15

Device for controlling the combustion of a burner

#15

20170146239

2017-05-25

Control system and method for a solid fuel combustion appliance

#16

20160231023

2016-08-11

Method of and system for flame sensing and diagnostic

#17

20160215972

2016-07-28

Gas-fueled heater

#18

20160047547

2016-02-18

Water heating device and method for measuring a flame current in a flame in a water heating device

#19

20150348393

2015-12-03

Flame sensing system

#20

20140147797

2014-05-29

System and method for controlling a furnace

#21

20130122439

2013-05-16

Fuel selection valve assemblies

#22

20120279584

2012-11-08

Field adjustable gas valve and method of control

#23

20110300494

2011-12-08

Control system and method for a solid fuel combustion appliance

#24

20110269082

2011-11-03

Gas pressure control for warm air furnaces

#25

20110079653

2011-04-07

Heated makeup air unit

#26

15391937

2019-09-10

Wireless carbon monoxide furnace shutoff system