Electrostatic display board

Details Electrostatic display board Electrostatic display board

1985-12-05

1988-05-03

Mancene, Gene

Card, picture, or sign exhibiting

Signs

Adhesive attaching feature

40 10R, 40158R, G09F 712

Patent

active

047411198

ABSTRACT:
A display board for displaying, behind a transparent window, a sheet document such as a paper document clinging electrostatically on the surface of a dielectric plastic backing board. The sheet document is covered by a sheet of transparent thin film plastic, preferably provided with a display window with a contrasting border or matte, which also tends to cling electrostatically against the sheet document with the result that the sheet document is sandwiched between the backing board and the sheet of transparent plastic film.

REFERENCES:
patent: 2586039 (1952-02-01), Heggedal
patent: 2598755 (1952-06-01), Birch
patent: 2677910 (1954-05-01), Morgan
patent: 2758402 (1956-08-01), Filmer
patent: 2886907 (1959-05-01), Stephenson
patent: 2942368 (1960-06-01), Gale
patent: 3440750 (1969-04-01), Toth et al.
patent: 3466774 (1969-09-01), Borresen
patent: 3924879 (1975-12-01), Whright
patent: 4250642 (1981-02-01), Riehle

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