Methods for treating clogged underground sewage drain systems
United States Patent 2768949
US Patent References:
/0168477.html
- - 0168477
/1892093.html
- - 1892093
Method of cleaning catch basins
- - 2010540
Method for preventing deposits within water formations and on well screens
- - 2352832
Removal of carbonaceous deposits
- - 2419076
/0168477.html
- - 0168477
/1892093.html
- - 1892093
Method of cleaning catch basins
- - 2010540
Method for preventing deposits within water formations and on well screens
- - 2352832
Removal of carbonaceous deposits
- - 2419076
Inventors:
Hewey, George R.
Publication Date:
10/30/1956
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Assignee:
Hewey, George R.
Primary Class:
Other Classes:
405/43, 210/758, 405/184.100, 405/129.100, 134/3, 210/205, 166/305.100, 134/28, 166/56
International Classes:
E03F1/00; E03F7/10; E03F7/00
US Patent References:
| 2648440 | Process for cleaning filter sand beds |