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公开(公告)号：US1334828A
公开(公告)日：1920-03-23
申请号：US25541918
申请日：1918-09-24
Applicant: ALDRICH PUMP COMPANY
Inventor： HILTON ALDRICH ROSCOE
IPC: F04B49/10
CPC classification number: F04B49/10
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