Electric incandescent projection lamp
United States Patent 3249789
US Patent References:
/1316001.html
- - 1316001

Electrical condenser
- - 2668946

Projection lamp
- - 2980818

Integral beam lamp and projection system
- - 3023667


Inventors:
Preschel, Kenneth S.
Wright, Robert W.
Publication Date:
05/03/1966
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Assignee:
GEN ELECTRIC
Primary Class:
313/113
Other Classes:
174/153R, 313/271, 313/275
International Classes:
H01K1/18; H01K7/02; H01K1/00; H01K7/00