Photography and optical equipment – Projector or viewer – Element or attachment
Patent
1988-09-12
1991-10-01
Feifer, Melvin B.
Photography and optical equipment
Projector or viewer
Element or attachment
D14132
Patent
active
D03204030
REFERENCES:
patent: D297007 (1988-08-01), Pushelberg
patent: D297644 (1988-09-01), Sugiyama et al.
patent: D308055 (1990-05-01), Tedham et al.
patent: 4904079 (1990-02-01), Yoshimura et al.
patent: 4944578 (1990-07-01), Denison
patent: 4963001 (1990-10-01), Miyajima
patent: 4969731 (1990-11-01), Ogino et al.
Flasck Richard A.
Stahl Thomas D.
Feifer Melvin B.
Honeywell Inc.
Hyder Philip S.
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