Film viewer

Details Film viewer Film viewer

1980-02-26

1982-03-02

O'Keefe, Veronica

Photography and optical equipment

Projector or viewer

With provision for transparency magazine

40362, 40366, 40367, 40361, D1602

Patent

active

D02632411

REFERENCES:
patent: 3002426 (1961-10-01), McCabe
patent: 3626617 (1971-12-01), Frey
patent: 3675354 (1972-07-01), Webb

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