Connector for vacuum cleaners
United States Patent 2861586
US Patent References:
/0980418.html
- - 0980418

/1036378.html
- - 1036378

/1037083.html
- - 1037083

/1044707.html
- - 1044707

Wall service-bushing for vacuum cleaning and other systems
- - 1347236


Inventors:
Dobbs, Earl B.
Publication Date:
11/25/1958
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Assignee:
Dobbs, Earl B.
Primary Class:
137/360
Other Classes:
285/345, 15/301, 251/299, 137/362, 285/20
International Classes:
A47L5/38; F16L37/04; A47L5/22; F16L37/00
US Patent References:
1597312Combined house heating and vacuum cleaning system
2246404Vacuum cleaner attachment
Foreign References:
FR1100958A