Projectors or projection-type viewers; Accessories therefor (devices for changing pictures G03B23/00)

Introduced: September 1968

Title

Titles differ between systems:

IPC: Projectors or projection-type viewers; Accessories therefor

CPC: Projectors or projection-type viewers; Accessories therefor (devices for changing pictures G03B23/00)

Full titles differ between systems:

IPC:

Projectors or projection-type viewers; Accessories therefor

CPC:

Projectors or projection-type viewers; Accessories therefor (devices for changing pictures G03B23/00)

Of 13 combined children, 10 exist in both systems.

3 codes are CPC-only extensions.

2 shared codes have differing titles between IPC and CPC.

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G03B 21/001 CPC only CPC only
G03B 21/003 CPC only CPC only
G03B 21/005 +2 CPC CPC only CPC only
G03B 21/02 Multiple-film apparatus IPC+CPC Available in IPC and CPC
G03B 21/06 affording only episcopic projection IPC+CPC Available in IPC and CPC
G03B 21/08 affording epidiascopic projection IPC+CPC Available in IPC and CPC
G03B 21/10 Projectors with built-in or built-on screen IPC+CPC Available in IPC and CPC
G03B 21/12 adapted for projection of either still pictures or motion pictures (prolonged exhibition of single frame G03B21/38) IPC+CPC Available in IPC and CPC
G03B 21/13 Projectors for producing special effects at the edges of picture, e.g. blurring IPC+CPC Available in IPC and CPC
G03B 21/132 Overhead projectors, i.e. capable of projecting hand-writing or drawing during action (epidiascopic projectors G03B21/08) IPC+CPC Available in IPC and CPC
G03B 21/134 Projectors combined with typing apparatus or with printing apparatus IPC+CPC Available in IPC and CPC
G03B 21/14 Details +3 CPC IPC+CPC Available in IPC and CPC
G03B 21/54 Accessories IPC+CPC Available in IPC and CPC