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United States Patent 2123329

Inventors:
Combs, William J.
Mann, Oscar O.
Publication Date:
07/12/1938
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Assignee:
Combs, William J.
Mann, Oscar O.
Primary Class:
403/42
Other Classes:
248/407, 126/30, 403/112, 119/790, 403/377, 403/383, 374/E01.018, 70/62
International Classes:
E04H12/22; G01K1/14