CPC Subgroup
G03B 23/02 in which pictures are removed from, and returned to, magazines; Magazines therefor
Full Title
Devices for changing pictures in viewing apparatus or projectors > in which pictures are removed from, and returned to, magazines; Magazines therefor
2 direct subcodes
Child Classifications
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- G03B 23/04 with linear movement
- G03B 23/06 with rotary movement