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Automatic lubricant sealed gate valve
US 2,954,044 A
Filed
: 01/11/1956
Issued
: 09/27/1960
Est. Priority Date
: 01/11/1956
Status: Expired due to Term
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Current Assignee
Alexander S. Volpin
Original Assignee
Alexander S. Volpin
Inventors
Volpin, Alexander S.
Application Number
US03/558,493
Time in Patent Office
1,721 Days
Field of Search
US Class Current
137/246.12
CPC Class Codes
F16K 3/36
Features relating to lubric...
Y10T 137/4372
Line pressure feed
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