Light diffusing thermoplastic tube to encircle an elongated lighting element
United States Patent 2551710

Inventors:
Slaughter, Charles E.
Publication Date:
05/08/1951
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Assignee:
EXTRUDED PLASTICS INC
Primary Class:
362/355
Other Classes:
D26/137, 29/455.100, 264/209.100, 138/113, 362/218, 206/446, 285/423, 138/38
International Classes:
F21V17/04; F21V17/00
US Patent References:
2319802Ornamental tubing
2366216Shield for mercury vapor lamps
2389234Road sign or signal