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公开(公告)号：US1490454A
公开(公告)日：1924-04-15
申请号：US54366622
申请日：1922-03-14
Applicant: EASTERN MFG COMPANY
Inventor： GURNEY CALLAN JOHN , CRAVEN GEORGE B
IPC: F16G1/04
CPC classification number: F16G1/04 , Y10T24/1664
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