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PCE
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CPC Subgroup
G03C 5/14

combined with sound-recording (sound-recording in general G11B)

Full Title

Photographic processes or agents therefor; Regeneration of such processing agents (multicolour processes or agents therefor G03C7/00; diffusion-transfer processes or agents therefor G03C8/00; stereo-photographic processes G03C9/00; photomechanical processes G03F) > Cinematrographic processes of taking pictures or printing > combined with sound-recording (sound-recording in general G11B)