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Pumping device
US 2,679,807 A
Filed
: 06/01/1951
Issued
: 06/01/1954
Est. Priority Date
: 06/01/1951
Status: Expired due to Term
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Current Assignee
Bruckmann Paul M W
Original Assignee
Bruckmann Paul M W
Inventors
BRUCKMANN PAUL M W
Application Number
US03/229,373
Time in Patent Office
1,096 Days
Field of Search
US Class Current
418/45
CPC Class Codes
F04B 43/1253
by using two or more roller...
F04B 43/1292
Pumps specially adapted for...
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