Pneumatic systems
United States Patent 3048875
US Patent References:
Combined switch-box and vacuum-line-seal mechanism for vacuum-cleaning systems
- - 1618667
Separator
- - 1727733
Air or gas cleaning apparatus
- - 2583252
Central vacuum cleaning system
- - 2825921
Cooling tower
- - 2889003
Combined switch-box and vacuum-line-seal mechanism for vacuum-cleaning systems
- - 1618667
Separator
- - 1727733
Air or gas cleaning apparatus
- - 2583252
Central vacuum cleaning system
- - 2825921
Cooling tower
- - 2889003
Inventors:
Bottinelli, Norman E.
Rovenger, Harry M.
Rovenger, Harry M.
Publication Date:
08/14/1962
View Patent Images:
Export Citation:
Assignee:
Joseph, Rossi P.
Primary Class:
Other Classes:
15/330, 15/353, 55/DIG.008, 261/121.100, 261/24, 261/70, 15/314, 137/391
International Classes:
A47L5/38; A47L5/22
Foreign References:
| CA558151A | ||||
| FR666652A |