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PDF
Scheme
Definition
CPC-to-IPC
Compilation of Changes
Recent Changes List
CPC to IPC Concordance for Subclass
G
21C
Printable Version [PDF]
Version:
2026.08
CPC Group
IPC Group
CPC Group
IPC Group
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21
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17/025
open_in_new
G
21C
17/0255
G
21
C
17/025
open_in_new
G
21C
17/028
G
21
C
17/028
open_in_new
G
21C
17/032
G
21
C
17/032
open_in_new
G
21C
17/035
G
21
C
17/035
open_in_new
G
21C
17/038
G
21
C
17/038
open_in_new
G
21C
17/04
G
21
C
17/04
open_in_new
G
21C
17/041
G
21
C
17/04
open_in_new
G
21C
17/042
G
21
C
17/04
open_in_new
G
21C
17/044
G
21
C
17/04
open_in_new
G
21C
17/045
G
21
C
17/04
open_in_new
G
21C
17/047
G
21
C
17/04
open_in_new
G
21C
17/048
G
21
C
17/04
open_in_new
G
21C
17/06
G
21
C
17/06
open_in_new
G
21C
17/063
G
21
C
17/06
open_in_new
G
21C
17/066
G
21
C
17/06
open_in_new
G
21C
17/07
G
21
C
17/07
open_in_new
G
21C
17/08
G
21
C
17/08
open_in_new
G
21C
17/10
G
21
C
17/10
open_in_new
G
21C
17/102
G
21
C
17/10
open_in_new
G
21C
17/104
G
21
C
17/104
open_in_new
G
21C
17/108
G
21
C
17/108
open_in_new
G
21C
17/112
G
21
C
17/112
open_in_new
G
21C
17/116
G
21
C
17/116
open_in_new
G
21C
17/12
G
21
C
17/12
open_in_new
G
21C
17/14
G
21
C
17/14
open_in_new
G
21C
19/00
G
21
C
19/00
open_in_new
G
21C
19/02
G
21
C
19/02
open_in_new
G
21C
19/04
G
21
C
19/04
open_in_new
G
21C
19/06
G
21
C
19/06
open_in_new
G
21C
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G
21
C
19/06
open_in_new
G
21C
19/07
G
21
C
19/07
open_in_new
G
21C
19/08
G
21
C
19/08
open_in_new
G
21C
19/10
G
21
C
19/10
open_in_new
G
21C
19/105
G
21
C
19/105
open_in_new
G
21C
19/11
G
21
C
19/11
open_in_new
G
21C
19/115
G
21
C
19/115
open_in_new
G
21C
19/12
G
21
C
19/12
open_in_new
G
21C
19/14
G
21
C
19/14
open_in_new
G
21C
19/16
G
21
C
19/16
open_in_new
G
21C
19/18
G
21
C
19/18
open_in_new
G
21C
19/19
G
21
C
19/19
open_in_new
G
21C
19/20
G
21
C
19/20
open_in_new
G
21C
19/202
G
21
C
19/20
open_in_new
G
21C
19/205
G
21
C
19/20
open_in_new
G
21C
19/207
G
21
C
19/20
open_in_new
G
21C
19/22
G
21
C
19/22
open_in_new
G
21C
19/24
G
21
C
19/24
open_in_new
G
21C
19/26
G
21
C
19/26
open_in_new
G
21C
19/28
G
21
C
19/28
open_in_new
G
21C
19/30
G
21
C
19/30
open_in_new
G
21C
19/303
G
21
C
19/303
open_in_new
G
21C
19/307
G
21
C
19/307
open_in_new
G
21C
19/31
G
21
C
19/31
open_in_new
G
21C
19/313
G
21
C
19/313
open_in_new
G
21C
19/317
G
21
C
19/317
open_in_new
G
21C
19/32
G
21
C
19/32
open_in_new
G
21C
19/34
G
21
C
19/34
open_in_new
G
21C
19/36
G
21
C
19/36
open_in_new
G
21C
19/365
G
21
C
19/365
open_in_new
G
21C
19/37
G
21
C
19/37
open_in_new
G
21C
19/375
G
21
C
19/375
open_in_new
G
21C
19/38
G
21
C
19/38
open_in_new
G
21C
19/40
G
21
C
19/40
open_in_new
G
21C
19/42
G
21
C
19/42
open_in_new
G
21C
19/44
G
21
C
19/44
open_in_new
G
21C
19/46
G
21
C
19/46
open_in_new
G
21C
19/48
G
21
C
19/48
open_in_new
G
21C
19/50
G
21
C
19/50
open_in_new
G
21C
21/00
G
21
C
21/00
open_in_new
G
21C
21/02
G
21
C
21/02
open_in_new
G
21C
21/04
G
21
C
21/04
open_in_new
G
21C
21/06
G
21
C
21/06
open_in_new
G
21C
21/08
G
21
C
21/08
open_in_new
G
21C
21/10
G
21
C
21/10
open_in_new
G
21C
21/12
G
21
C
21/12
open_in_new
G
21C
21/14
G
21
C
21/14
open_in_new
G
21C
21/16
G
21
C
21/16
open_in_new
G
21C
21/18
G
21
C
21/18
open_in_new
G
21C
23/00
G
21
C
23/00
open_in_new
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Last updated on:
Friday July 31, 2026
Published on:
Friday July 31, 2026
Owned by:
Office of International Patent Cooperation