Photography and optical equipment – Optical article not elsewhere specified – Lens or objective
Patent
1989-12-20
1992-03-10
Burke, Wallace R.
Photography and optical equipment
Optical article not elsewhere specified
Lens or objective
Patent
active
D03245292
REFERENCES:
patent: 2527071 (1950-10-01), Pierce
patent: 2586723 (1952-02-01), Sakols
patent: 3409347 (1968-11-01), Vogel
Baynham H.
Burke Wallace R.
Litman Richard C.
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