1975-02-06
1976-05-11
Corbin, John K.
G02B 962
Patent
active
039558835
ABSTRACT:
A wide angle photographic lens consisting of six lenses wherein the following conditions are satisfied;
REFERENCES:
patent: 1955590 (1934-04-01), Lee
patent: 3645605 (1972-02-01), Nakagawa
patent: 3884556 (1975-05-01), Nakagawa
Asahi Kogaku Kogyo Kabushiki Kaisha
Clark Conrad
Corbin John K.
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