Removable antiblocking top coat

Details Removable antiblocking top coat Removable antiblocking top coat

1974-08-16

1976-08-24

Klein, David

Gas separation: apparatus

Electric field separation apparatus

Electrode retaining or supporting means

96 76R, 96 87R, G03C 184, G03C 148, G03C 178, G03C 196

Patent

active

039764907

ABSTRACT:
The present invention is directed to diffusion transfer photographic products especially useful as film units in film packs or the like. Essentially the photographic products presented comprise a photosensitive element which after processing can provide a useable negative which is preferably produced concurrently with the formation of a positive image pattern.

REFERENCES:
patent: 3240604 (1966-03-01), Cook
patent: 3295979 (1967-01-01), Secrist et al.
patent: 3316198 (1967-04-01), Van Gorder et al.
patent: 3677790 (1972-07-01), Bishop et al.

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