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公开(公告)号：US1976424A
公开(公告)日：1934-10-09
申请号：US62575632
申请日：1932-07-29
Applicant: OILGEAR CO
Inventor： FRANKLIN YOUNG LAWRENCE , WALTER FERRIS
CPC classification number: F01B1/0668 , F01B1/0644 , F01B13/062 , Y10T74/18024
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