Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1979-09-24
1981-11-17
Caun, Peter M.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D16 25, D1602
Patent
active
D02618958
REFERENCES:
patent: 2474055 (1949-06-01), Lacey
patent: 3472587 (1969-10-01), Liguori
patent: 3950085 (1976-04-01), Grimm
Caun Peter M.
Scottie Graphics Inc.
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