Photography and optical equipment – Optical article not elsewhere specified – Lens or objective
Patent
1991-08-12
1993-09-21
Ansher, Bernard
Photography and optical equipment
Optical article not elsewhere specified
Lens or objective
Patent
active
D03395979
REFERENCES:
patent: 1759041 (1930-05-01), Dawes
patent: 2224560 (1940-12-01), Wentz
patent: 2890458 (1959-06-01), Hammond
patent: 2891251 (1959-06-01), Ebersole
patent: 3011170 (1961-12-01), Lutz
Ansher Bernard
Barkai R.
Miller Alfred E.
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