PRESSURE-VACUUM CLEANING AND TREATING DEVICE
United States Patent 3484890
US Patent References:
Vacuum cleaners
- - 3257681

/1281925.html
- - 1281925

Suction cleaner
- - 2269482

Suction cleaner
- - 2314334


Inventors:
Case, William H.
Publication Date:
12/23/1969
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Assignee:
William, Case H.
Primary Class:
15/346
Other Classes:
15/327.100, 15/413
International Classes:
A47L5/14; A47L7/04; A47L5/12; A47L7/00; A47L7/04; A47L5/14
Foreign References:
DE661573C
IT620253B




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