CLEANING DEVICE
United States Patent 3431582
US Patent References:
/0930628.html
- - 0930628

Scrubbing and carpet-washing machine
- - 1670934

Window washing apparatus
- - 2292435

Builtin vacuum cleaner
- - 3173164


Inventors:
Grave, Dale L.
Publication Date:
03/11/1969
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Assignee:
Dale, Grave L.
Primary Class:
15/321
Other Classes:
15/353
International Classes:
A47L11/30; A47L11/29; A47L9/20; A47L5/32; A47L7/00
Foreign References:
CA584806A




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