Title:
Combined switch-box and vacuum-line-seal mechanism for vacuum-cleaning systems
United States Patent 1618667
Inventors:
Melcher, Irving W.
Publication Date:
02/22/1927
Export Citation:
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Assignee:
Theodore, Ware C.
Primary Class:
200/61.6
Other Classes:
15/314, 15/DIG.10, 55/DIG.8, 55/DIG.34, 137/360, 138/89, 200/330, 200/331
International Classes:
A47L5/38; A47L9/24; A47L5/22; A47L9/24
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