Mirror stereoscope

Details Mirror stereoscope Mirror stereoscope

1980-06-20

1983-04-19

Holtje, Nelson C.

Photography and optical equipment

Projector or viewer

With provision for transparency magazine

D1699

Patent

active

D02686805

REFERENCES:
patent: D124240 (1940-12-01), Ryker
patent: D207508 (1967-04-01), Hubbard
patent: 2225602 (1940-12-01), Ryker
patent: 2246604 (1941-06-01), Smith
patent: 2951417 (1960-09-01), Reeder
patent: 3005378 (1961-10-01), Golden
patent: 3187625 (1965-06-01), Howell

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