Photography and optical equipment – Optical article not elsewhere specified – Lens or objective
Patent
1993-06-01
1995-10-17
Coles, Doris V.
Photography and optical equipment
Optical article not elsewhere specified
Lens or objective
Patent
active
D03633004
REFERENCES:
patent: 3410635 (1968-11-01), Lockwood
patent: 3672749 (1972-06-01), Roser
patent: 3684349 (1972-08-01), Karp
patent: 4053765 (1977-10-01), Kuffer
patent: 4215916 (1980-08-01), Bell et al.
patent: 5210647 (1993-05-01), Hartnagel et al.
Caprock Developments, Inc.
Chow Frank S.
Coles Doris V.
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