Photography and optical equipment – Projector or viewer – Integrated unit
Patent
1989-12-01
1991-12-10
Ansher, Bernard
Photography and optical equipment
Projector or viewer
Integrated unit
D16221, D16222
Patent
active
D03222632
REFERENCES:
patent: D171480 (1954-02-01), Beck
patent: D174111 (1955-03-01), Crapsey
patent: D183462 (1958-09-01), Maiershofer
patent: 2131444 (1938-09-01), Lateltin et al.
Industrial Design, Oct. 1957, p. 24.
Ansher Bernard
Aronovich Adir
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