Exchangeable frame for transparencies

Details Exchangeable frame for transparencies Exchangeable frame for transparencies

1974-03-21

1976-01-27

Mancene, Louis G.

Card, picture, or sign exhibiting

Display card

Having a curved display panel

G09F 112

Patent

active

039343677

ABSTRACT:
A re-useable frame for photographic transparencies is injection-moulded in one piece and consists of top and bottom frame members joined by connecting elements which interengage with the top frame member as the frame is closed to strengthen a hinge which is formed by interengagement of pins on one frame member with bearings on the other.

REFERENCES:
patent: 3200527 (1965-08-01), Clark

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