Diapositive frames

Details Diapositive frames Diapositive frames

1980-07-07

1982-02-09

Mancene, Gene

Card, picture, or sign exhibiting

Display card

Having a curved display panel

G09F 112

Patent

active

043144160

ABSTRACT:
A diapositive frame for mounting projection slides and the like comprising two frame halves, each having rectangular picture areas therein, and position indicating indentations along marginal section edges. The two frame halves can be joined to form the diapositive frame in two respectively different positions and as thus joined, the indentations serve to provide information as to horizontal or vertical positions of the diaframe.

REFERENCES:
patent: 2165790 (1939-07-01), Engel
patent: 2268529 (1941-12-01), Kime
patent: 2603017 (1952-07-01), Merrill
patent: 2806308 (1957-09-01), Goldberg
patent: 3419987 (1969-01-01), Hipp

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