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United States Patent 2172479

Inventors:
Mcmillen, Albert C.
Publication Date:
09/12/1939
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Assignee:
Mcmillen, Albert C.
Primary Class:
15/220.300
Other Classes:
15/160, 15/172, 15/235, 15/146
International Classes:
A47L4/02; A47L4/00