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WELL PUMPING CONTROL SYSTEM
US 3,509,824 A
Filed
: 07/06/1967
Issued
: 05/05/1970
Est. Priority Date
: 07/06/1967
Status: Expired due to Term
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Current Assignee
Schmidly James Jr
Original Assignee
Schmidly James Jr
Inventors
SCHMIDLY JAMES JR
Application Number
US04/651,511
Time in Patent Office
1,034 Days
Field of Search
US Class Current
417/12
CPC Class Codes
H02H 7/0827
responsive to underload or ...
H02H 7/085
against excessive load H02H...
H02H 7/09
against over-voltage; again...
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