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公开(公告)号：US1624274A
公开(公告)日：1927-04-12
申请号：US9066426
申请日：1926-02-25
Applicant: MYRDAL JOHN M
Inventor： MYRDAL JOHN M
IPC: B27M3/28
CPC classification number: B27M3/28 , Y10T408/55
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