Title:
Self-luminous keyhole locator
Document Type and Number:
United States Patent 2188264
Inventors:
Frodyce, Rufus G.
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Publication Date:
01/23/1940
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Assignee:
LUMINOUS PROCESSES INC
Primary Class:
Other Classes:
70/454, 70/431
International Classes:
E05B17/10; E05B17/00