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Valve assembly for drain conduits
US 2,757,752 A
Filed
: 07/30/1952
Issued
: 08/07/1956
Est. Priority Date
: 07/30/1952
Status: Expired due to Term
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Current Assignee
Jack W. Kaufman
Original Assignee
Jack W. Kaufman
Inventors
Kaufman, Jack W.
Application Number
US03/301,707
Time in Patent Office
1,469 Days
Field of Search
US Class Current
210/119
CPC Class Codes
F16K 15/04
shaped as balls
Y10T 137/7436
Float rigid with valve
Y10T 137/7504
Removable valve head and se...
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