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公开(公告)号：US3347431A
公开(公告)日：1967-10-17
申请号：US54013266
申请日：1966-03-07
Applicant: CLEVELAND DETROIT CORP
Inventor： BREISCH JOHN H
IPC: B23D21/00
CPC classification number: B23D21/00 , Y10T225/371
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