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United States Patent 2168644
Inventors:
Browning, Albert E.
Publication Date:
08/08/1939
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Download PDF 2168644
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Assignee:
Browning, Albert E.
Primary Class:
273/373
Other Classes:
340/323R, 439/426, 340/333
International Classes:
F41J5/052
;
F41J5/00