1984-01-17
1987-01-06
Gellner, Michael L.
354400, 354 64, G03B 310, G03B 1708
Patent
active
046342532
ABSTRACT:
A camera of waterproof construction permitting underwater photography includes focusing means for adjustment of the focal point of a photo-taking lens and operation means for adjusting the focal point of the lens to a predetermined position suited for underwater photography.
REFERENCES:
patent: 4381144 (1983-04-01), Breslau
patent: 4470680 (1984-09-01), Inagaki
Canon Kabushiki Kaisha
Gellner Michael L.
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