Adjustable lock
United States Patent 2090550

Inventors:
Pilblad, Eric J.
Publication Date:
08/17/1937
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Assignee:
Pilblad, Eric J.
Primary Class:
248/410
Other Classes:
403/109.500, 294/92, 292/306, 285/317, 411/918, 403/104, 285/902, 285/303
International Classes:
H04R1/08