Hose connecting structure for vacuum cleaning systems
United States Patent 3335744
US Patent References:
/1019131.html
- - 1019131

Flow control device
- - 2275477

Inlet valve assembly
- - 3036814


Inventors:
Hanford, Stewart H.
Publication Date:
08/15/1967
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Assignee:
DIEBOLD INC
Primary Class:
137/360
Other Classes:
251/352, 251/149.800
International Classes:
A47L9/24