Photography and optical equipment – Optical article not elsewhere specified – Lens or objective
Patent
1981-02-25
1983-08-16
Lucas, Susan J.
Photography and optical equipment
Optical article not elsewhere specified
Lens or objective
D1606
Patent
active
D02701650
REFERENCES:
patent: 2269037 (1942-01-01), Oker
patent: 3233249 (1966-02-01), Baratelli et al.
patent: 4102566 (1978-07-01), Shelton
Lucas Susan J.
Pro-Tec, Inc.
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