Keyhole light
United States Patent 2831959
US Patent References:
Keyhole illuminator
- - 2007101

Signaling device
- - 2127538


Inventors:
Jefferson, Karl G.
Publication Date:
04/22/1958
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Assignee:
Jefferson, Karl G.
Primary Class:
362/100
Other Classes:
200/61.590, 362/802, 362/394, 200/61.660, D26/85
International Classes:
E05B17/10; E05B17/00