Title:
Self-luminous signs
Document Type and Number:
United States Patent 3038271


Inventors:
Machutchin, John G.
Buck, Walter F.
Flynn, John C.
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Publication Date:
06/12/1962
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Assignee:
UNITED STATES RADIUM CORP
Primary Class:
40/544
Other Classes:
40/542, 313/54, 250/462.100
International Classes:
F21S8/00; G09F13/42; G09F13/00
US Patent References:
RE18679
1816220Changeable luminous display
1914932Illuminated display sign
1937957Luminous sign
1994519Sign
2155449Self-luminous article
2604711Illuminated sign
2651863Sign structure
2712188Instrument panel
2740957Colored filter blocks
2880536Illuminated display device
2883770Illuminated writing tablet having concealable illuminating means


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