Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1976-06-11
1978-02-14
Burke, Wallace R.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1602
Patent
active
D02472422
REFERENCES:
patent: D193316 (1962-07-01), King
patent: D199097 (1964-09-01), Mulch et al.
patent: D228955 (1973-10-01), Mango et al.
patent: D237309 (1975-10-01), Bourke
Burke Wallace R.
GAF Corporation
Kehm Walter C.
Kemper Catherine
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