Details

Introduced: September 1968

Full Title

Photographic printing apparatus > Projection printing apparatus, e.g. enlarger, copying camera > Details

Of 10 combined children, 8 exist in both systems.

2 codes are CPC-only extensions.

2 shared codes have differing titles between IPC and CPC.

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G03B 27/521 CPC only CPC only
G03B 27/522 +2 CPC CPC only CPC only
G03B 27/53 Automatic registration or positioning of originals with respect to each other or the photosensitive layer since 1985 IPC+CPC Available in IPC and CPC
G03B 27/54 Lamp housings; Illuminating means +2 CPC IPC+CPC Available in IPC and CPC
G03B 27/56 Mounting enlarger head on column IPC+CPC Available in IPC and CPC
G03B 27/58 Baseboards, masking frames, or other holders for the sensitive material (G03B27/53 takes precedence ) +5 CPC IPC+CPC Available in IPC and CPC
G03B 27/62 Holders for the original (G03B27/53 takes precedence ) +2 CPC IPC+CPC Available in IPC and CPC
G03B 27/66 specially adapted for holding half-tone screens IPC+CPC Available in IPC and CPC
G03B 27/68 Introducing or correcting distortion, e.g. in connection with oblique projection IPC+CPC Available in IPC and CPC
G03B 27/70 Reflectors in printing beam IPC+CPC Available in IPC and CPC

Class G03,2013–2023, worldwide · Source: EPO PATSTAT

Class G03,2013–2023, worldwide · Source: EPO PATSTAT