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SLURRY VALVE
US 3,528,448 A
Filed
: 10/04/1967
Issued
: 09/15/1970
Est. Priority Date
: 10/04/1967
Status: Expired due to Term
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Petitions
41
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1
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Current Assignee
John B. Urban
Original Assignee
John B. Urban
Inventors
Urban, John B.
Application Number
US04/672,767
Time in Patent Office
1,077 Days
Field of Search
US Class Current
137/242
CPC Class Codes
F16K 5/0642
the spherical plug being in...
F16K 5/208
with tongue-shaped means
Y10T 137/4273
Mechanical cleaning
Y10T 137/6035
Rotary ball valve
Y10T 137/6052
Having valve head or seat p...
Y10T 137/6055
With head and stem collections
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