Internally illuminated retroreflective signs

Details Internally illuminated retroreflective signs Internally illuminated retroreflective signs

1975-08-29

1977-02-01

Apley, Richard J.

Card, picture, or sign exhibiting

Display card

Having a curved display panel

40132D, 40135, 428143, G09F 708

Patent

active

040055388

ABSTRACT:
Internally illuminated signs incorporating light-transmissive retroreflective sheeting between the internal illumination source and the sign face in position to retroreflect light beamed against the sign face so as to make the signs retroreflective. Preferred sheeting comprises an open web of filaments encased by retroreflective microspheres.

REFERENCES:
patent: 2130704 (1938-09-01), Patzwaldt
patent: 2390663 (1945-12-01), Pollard
patent: 2411222 (1946-11-01), Meigs
patent: 2624967 (1953-01-01), Phillippi
patent: 2948191 (1960-08-01), Hodgson et al.
patent: 3164124 (1965-01-01), Ehrsam
patent: 3176420 (1965-04-01), Alverson
patent: 3455045 (1969-07-01), Thomas
patent: 3510976 (1970-05-01), Pauline et al.

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