United States Patent 2923954
US Patent References:
/0784583.html
- - 0784583
/1114592.html
- - 1114592
Duplex welding tube
- - 2420221
Method of continuously extruding vinylidene chloride polymer tubes and stretching the same
- - 2452080
Swimming pool cleaning device
- - 2646889
/0784583.html
- - 0784583
/1114592.html
- - 1114592
Duplex welding tube
- - 2420221
Method of continuously extruding vinylidene chloride polymer tubes and stretching the same
- - 2452080
Swimming pool cleaning device
- - 2646889
Publication Date:
02/09/1960
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Primary Class:
Other Classes:
174/101.500, 138/103, 15/319, 138/118, 15/416, 15/380, 210/167.160, 174/47, 15/340.100
International Classes:
A47L7/00; E04H4/16; E04H4/00
Foreign References:
| GB229521A | ||||
| FR722755A | ||||
| AU964827A |