Title:
Apparatus for controlling backwater in sewer lines
United States Patent 2928410
US Patent References:
/0356448.html
- - 0356448

/0417452.html
- - 0417452

/1158996.html
- - 1158996

Trap
- - 1612195

Sewer check
- - 1732319


Inventors:
Del, Vecchio Deno
Publication Date:
03/15/1960
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Assignee:
Del, Vecchio Deno
Primary Class:
137/115.020
Other Classes:
137/448, 417/30
International Classes:
E03F7/04; E03F7/00
US Patent References:
1803479Water regulator for boilers
2292509Automatic valve for liquid containers
2739662Backwater sewer trap
2844163Backwater control device for sewers