Photography and optical equipment – Optical article not elsewhere specified
Patent
1988-07-20
1990-04-17
Word, A. Hugo
Photography and optical equipment
Optical article not elsewhere specified
D10 47, D26 48
Patent
active
D03072843
REFERENCES:
patent: D162750 (1951-04-01), Polye et al.
patent: D175284 (1955-08-01), Wagenseller
patent: D254395 (1980-03-01), Klawitter
patent: 3878394 (1975-04-01), Golden
Del Corno Marco
Zeni Sergio
Coles Doris V.
Maxmeyer-Duco MM.D. S.p.A.
Word A. Hugo
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