Devices for changing pictures in viewing apparatus or projectors

Introduced: September 1968

IPC and CPC are identically structured here. All 4 subcodes exist in both systems.

1 shared codes have differing titles between IPC and CPC.

Child Classifications

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G03B 23/02 in which pictures are removed from, and returned to, magazines; Magazines therefor IPC+CPC Available in IPC and CPC
G03B 23/08 in which pictures are attached to a movable carrier IPC+CPC Available in IPC and CPC
G03B 23/14 Carriers operable to move pictures into, and out of, the projection or viewing position and carrying one or two pictures only in a removable manner (G03B23/18 takes precedence) IPC+CPC Available in IPC and CPC
G03B 23/18 with fade-in and fade-out effects since 1985 IPC+CPC Available in IPC and CPC