Photography and optical equipment – Optical article not elsewhere specified – Lens or objective
Patent
1983-01-31
1986-09-02
Lucas, Susan J.
Photography and optical equipment
Optical article not elsewhere specified
Lens or objective
Patent
active
D02854520
REFERENCES:
patent: 1530604 (1925-03-01), Koehler
patent: 3052159 (1962-09-01), Gross et al.
patent: 3666355 (1972-05-01), Griffith
patent: 3744887 (1973-07-01), Dunbar
patent: 4005930 (1977-02-01), Guenin
Heflin Clare E.
Lucas Susan J.
Schuldenfrei Howard I.
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