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PCE
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Search for IPC and CPC classification codes or keywords
IPC
CPC
Diff
G
G02
G02B
G02B 21/00
G02B 21/24
G02B 21/241
G02B 21/245
G02B 21/247
CPC
Subgroup
G02B 21/247
Full Title
Microscopes > Base structure