Card – picture – or sign exhibiting – Display card – Having a curved display panel
Patent
1975-10-30
1976-12-14
Pitrelli, John F.
Card, picture, or sign exhibiting
Display card
Having a curved display panel
40152, C09F 112
Patent
active
039966836
ABSTRACT:
A frame for a transparency is made in one piece with oppositely directed slots on opposite sides of its window to allow a film section to be snapped into the slots and retained thereby cooperant with a tool for snapping the transparency into position in the frame.
REFERENCES:
patent: 3069795 (1962-12-01), Lieberman
patent: 3470643 (1969-10-01), Hans-Hermann Koeppe et al.
Hama Hamaphot KG., Hanke & Thomas
Pitrelli John F.
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