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Air pump
United States Patent 1649530
Inventors:
Lloyd, Holsinger
Publication Date:
11/15/1927
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Download PDF 1649530
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Assignee:
Lloyd, Holsinger
Primary Class:
137/227
Other Classes:
417/63, 141/370
International Classes:
B60S5/04
;
F04B33/00
;
B60S5/00