Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1977-08-08
1980-05-27
Burke, Wallace R.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1603
Patent
active
D02551233
REFERENCES:
patent: D205322 (1966-07-01), Vigna
patent: 3136237 (1964-06-01), Moon
Burke Wallace R.
Kemper Catherine
Maxwell Georges A.
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