Title:
Vacuum cleaner
Document Type and Number:
United States Patent 1797557


Inventors:
Stine, Ernest R.
Bernhardt, Matthias R.
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Sponsored by:
Flash of Genius
Publication Date:
03/24/1931
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Assignee:
Stine, Ernest R.
Bernhardt, Matthias R.
Primary Class:
43/139
Other Classes:
15/344, 15/345, 43/137
International Classes:
A01M1/06; A01M3/02; A01M1/00; A01M3/00