Binocular cover plate

Details Binocular cover plate Binocular cover plate

1977-11-23

1980-07-01

Ansher, Bernard

Photography and optical equipment

Projector or viewer

With provision for transparency magazine

D1606

Patent

active

D02556910

REFERENCES:
patent: D132474 (1942-05-01), Bausch et al.
patent: D152432 (1949-01-01), Perkins
patent: D240268 (1976-06-01), Huckenbeck
patent: 3431043 (1969-03-01), Cassidy et al.
patent: 3744872 (1973-07-01), Akin, Jr. et al.
patent: 4056303 (1977-11-01), Swarovski et al.
Bushnell Sport Optics Catalog, .COPYRGT.1976, p. 20, Binocular, bottom left of page.

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