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公开(公告)号：US1953172A
公开(公告)日：1934-04-03
申请号：US59598732
申请日：1932-03-01
Applicant: CORRECT MEASURE COMPANY
Inventor： GRIFFITHS ORAH E
IPC: F04B53/16
CPC classification number: F04B53/166 , F05C2201/0475 , F05C2201/0478 , Y10S285/922
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