Flashlight apparatus

Details Flashlight apparatus Flashlight apparatus

1983-07-14

1986-04-08

Holtje, Nelson C.

Photography and optical equipment

Projector or viewer

With provision for transparency magazine

Patent

active

D02833310

REFERENCES:
patent: D233562 (1974-11-01), Prochnow
patent: D241273 (1976-08-01), Okuno
patent: D263720 (1982-04-01), Takematsu
patent: D271306 (1983-11-01), Shull
patent: 2544388 (1951-03-01), Lang
patent: 3751652 (1973-08-01), Peterson
patent: 3999055 (1976-12-01), Wakahara
patent: 4078240 (1978-03-01), Kaneko
patent: 4190880 (1980-02-01), Esaki
patent: 4276579 (1981-06-01), Yako
patent: 4530034 (1985-07-01), Kawarada
British Journal of Photography--1--13--71, p. X--Flash Unit at top.

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