Indirect lighting luminair
United States Patent 2058139
Inventors:
Doane, Leroy C.
Publication Date:
10/20/1936
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Assignee:
Earl, Canfield L.
Primary Class:
Other Classes:
362/414, 362/347, 362/346
International Classes:
F21S6/00; F21V7/00; F21V21/06