Photography and optical equipment – Optical article not elsewhere specified – Lens or objective
Patent
1987-04-06
1990-01-23
Burke, Wallace R.
Photography and optical equipment
Optical article not elsewhere specified
Lens or objective
Patent
active
D03056643
REFERENCES:
patent: D135422 (1943-04-01), Austin
patent: D166597 (1952-04-01), Filsinger
patent: D269184 (1983-05-01), Tweedie
patent: D269275 (1983-06-01), Tweedie
patent: 2808761 (1957-10-01), Grave, Jr.
patent: 3945717 (1976-03-01), Ryder et al.
Bausch & Lomb Incorporated
Burke Wallace R.
Norton John S.
Reid Stella M.
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