Lens cap retainer

Details Lens cap retainer Lens cap retainer

1976-11-29

1978-04-25

Burke, Wallace R.

Photography and optical equipment

Projector or viewer

With provision for transparency magazine

D1699

Patent

active

D02477823

REFERENCES:
patent: 2583228 (1952-01-01), Numbers
patent: 3422498 (1969-01-01), Carlson
patent: 3924786 (1975-12-01), Duquette
Photographic Trade News Master Buying Guide-1976, vol. 39--p. 181-Sima Products "Capkeeper".

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