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公开(公告)号：US1903227A
公开(公告)日：1933-03-28
申请号：US5398225
申请日：1925-09-02
Applicant: ALEMITE CORP
Inventor： LINCOLN SNODGRASS JOHN
IPC: F16N3/12
CPC classification number: F16N3/12 , Y10T137/88054
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