DIFF Subgroup
G03B 23/02 in which pictures are removed from, and returned to, magazines; Magazines therefor
Introduced: September 1968
Full Title
Devices for changing pictures in viewing apparatus or projectors > in which pictures are removed from, and returned to, magazines; Magazines therefor
IPC and CPC are identically structured here. All 2 subcodes exist in both systems.
Child Classifications
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