Illuminated sign box

Details Illuminated sign box Illuminated sign box

1987-12-21

1989-09-12

Swiatek, Robert P.

Card, picture, or sign exhibiting

Signs

Stretched or tensioned

G09F 1700

Patent

active

048647560

ABSTRACT:
A sign box has a translucent front panel of flexible material which is attached to the longitudinal edges of a reflector of channel-shape, and which is stretched and tensioned by forcing the longitudinal edges of the reflector away from each other by means of reaction members contained within the reflector.

REFERENCES:
patent: 320290 (1885-06-01), Rosch
patent: 760367 (1904-05-01), Ambrose
patent: 2269718 (1942-01-01), Huber
patent: 4041861 (1977-08-01), Alter
patent: 4265039 (1981-05-01), Brooks
patent: 4317302 (1982-03-01), Von de Linde
patent: 4372071 (1983-02-01), Vicino
patent: 4441269 (1984-04-01), Dahl
patent: 4452000 (1984-06-01), Gandy
patent: 4542605 (1985-09-01), Gandy
patent: 4554754 (1985-11-01), Stilling
patent: 4674213 (1987-06-01), Keithley
patent: 4674214 (1987-06-01), Gandy

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