Card – picture – or sign exhibiting – Illuminated sign – Lamp box
Patent
1977-09-19
1980-01-29
Pitrelli, John F.
Card, picture, or sign exhibiting
Illuminated sign
Lamp box
40603, 40624, G09F 1304
Patent
active
041854080
ABSTRACT:
Apparatus for mounting signboard paper in large sheets or in elongated strips, and for holding the signboard paper in tension over a slightly curved board transparent surface, and including moveable tensioning devices.
REFERENCES:
patent: 3160973 (1964-12-01), Ruppelt et al.
patent: 3726035 (1973-04-01), Bower et al.
patent: 3862504 (1975-01-01), Ringelheim et al.
patent: 3934365 (1976-01-01), Stein et al.
Pitrelli John F.
Sjoquist Paul L.
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