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Corrosion and abrasion resistant sump pump for slurries
US 2,808,782 A
Filed
: 08/31/1953
Issued
: 10/08/1957
Est. Priority Date
: 08/31/1953
Status: Expired due to Term
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Current Assignee
John W. Thompson
,
Robert A. Wilson
,
Robert B. Holland
Original Assignee
John W. Thompson
,
Robert A. Wilson
,
Robert B. Holland
Inventors
Thompson, John W.
,
Wilson, Robert A.
,
Holland, Robert B.
Application Number
US03/377,506
Time in Patent Office
1,499 Days
Field of Search
US Class Current
415/98
CPC Class Codes
F04D 7/02
of centrifugal type
Y10S 415/901
Drilled well-type pump
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