Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1976-04-22
1977-11-29
Burke, Wallace R.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1603
Patent
active
D02465264
REFERENCES:
patent: D228151 (1973-08-01), Hikawa
patent: D235230 (1975-05-01), Herr et al.
patent: D236915 (1975-09-01), Hideshima
patent: D239659 (1976-04-01), Katayama et al.
patent: 3684363 (1972-08-01), Ito et al.
patent: 3873196 (1975-03-01), Ogawa
patent: 3972612 (1976-08-01), Komori et al.
Burke Wallace R.
Flehr Paul D.
Kemper Catherine
Sharp Kabushiki Kaisha
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