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PDF
Scheme
Definition
CPC-to-IPC
Compilation of Changes
Recent Changes List
CPC to IPC Concordance for Subclass
C
12R
Printable Version [PDF]
Version:
2026.08
CPC Group
IPC Group
CPC Group
IPC Group
C
12R
2001/00
C
12
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1/00
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12R
2001/01
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12
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1/01
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2001/02
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2001/05
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2001/15
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2001/16
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2001/17
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2001/24
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2001/25
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2001/265
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2001/28
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2001/29
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2001/30
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2001/31
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2001/64
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2001/66
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2001/84
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Last updated on:
Friday July 31, 2026
Published on:
Friday July 31, 2026
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Office of International Patent Cooperation