Vacuum cleaner
United States Patent 2291984

Inventors:
Ponselle, Robert A.
Publication Date:
08/04/1942
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Assignee:
Ponselle, Robert A.
Primary Class:
248/154
Other Classes:
248/129, 280/47.340
International Classes:
A47L5/36; A47L9/16; A47L5/22; A47L9/10