Photography and optical equipment – Optical article not elsewhere specified – Lens or objective
Patent
1991-10-28
1993-11-23
Word, A. Hugo
Photography and optical equipment
Optical article not elsewhere specified
Lens or objective
Patent
active
D03416119
REFERENCES:
patent: D189383 (1960-11-01), Macomber
patent: D302169 (1989-07-01), Kimura et al.
patent: D303976 (1989-10-01), Kimura et al.
patent: D331589 (1992-12-01), Yamamoto
patent: 4923281 (1990-05-01), Krichever et al.
Popular Photography, Nov. 1990, Sigma Lens, p. 77.
Popular Photography, Nov. 1990, p. 79, Tokina Lens.
Asahi Kogaku Kogyo K.K.
Coles Doris V.
Word A. Hugo
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