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PCE
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Search for IPC and CPC classification codes or keywords
DIFF Subgroup
G03B 27/36

by mechanical connections, e.g. by cam, by linkage

Introduced: September 1968

Full Title

Photographic printing apparatus > Projection printing apparatus, e.g. enlarger, copying camera > Means for automatic focusing therefor > by mechanical connections, e.g. by cam, by linkage

IPC and CPC are identically structured here. All 2 subcodes exist in both systems.

Child Classifications

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  • G03B 27/38 embodying screws with non-uniform pitch IPC+CPC Available in IPC and CPC
  • G03B 27/40 adapted for use with lenses of different focal length IPC+CPC Available in IPC and CPC