Display device
United States Patent 3056019
US Patent References:
Display device
- - 1671071

Illuminating device
- - 1824270

Luminous animated out-door billboard
- - 1843897

Sign
- - 1854418

Display device
- - 1878750


Inventors:
William, Apatoff
Glasser, Ernest C.
Publication Date:
09/25/1962
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Assignee:
POLYOPTIC CORP
Primary Class:
40/433
Other Classes:
40/440, 362/318, 362/281
International Classes:
F21S10/00; F21S10/06; F21V1/10; F21V5/04; G09F13/00; F21V1/00; F21V5/00
US Patent References:
1918123Illuminating apparatus
1928329Revolving lamp shade
1937138Means for and method of illumination
2199308Sign apparatus
2371172
2761959Variable color light source
Foreign References:
GB216654A