DIFF Subgroup
G03B 21/12 adapted for projection of either still pictures or motion pictures (prolonged exhibition of single frame G03B21/38)
Introduced: September 1968
Title
Titles differ between systems:
IPC: adapted for projection of either still pictures or motion pictures
CPC: adapted for projection of either still pictures or motion pictures (prolonged exhibition of single frame G03B21/38)
Full Title
Full titles differ between systems:
IPC:
Projectors or projection-type viewers; Accessories therefor > adapted for projection of either still pictures or motion pictures
CPC:
Projectors or projection-type viewers; Accessories therefor (devices for changing pictures G03B23/00) > adapted for projection of either still pictures or motion pictures (prolonged exhibition of single frame G03B21/38)
No child classifications to compare. This is a leaf node in both IPC and CPC.