Photography and optical equipment – Optical article not elsewhere specified – Lens or objective
Patent
1980-09-08
1983-04-12
Lucas, Susan J.
Photography and optical equipment
Optical article not elsewhere specified
Lens or objective
D 2234, D023, D1606
Patent
active
D02685930
REFERENCES:
patent: D238831 (1976-02-01), Helfand
patent: 3225459 (1965-12-01), Wilstein
patent: 3392461 (1968-07-01), Jenison
patent: 3710392 (1973-01-01), Morris, Jr.
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