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公开(公告)号：US1453878A
公开(公告)日：1923-05-01
申请号：US48585421
申请日：1921-07-19
Applicant: LAGEMANN GUSTAV P
Inventor： LAGEMANN GUSTAV P
IPC: B23B45/06
CPC classification number: B23B45/06 , Y10T408/65 , Y10T408/68
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公开(公告)号：US1536890A
公开(公告)日：1925-05-05
申请号：US65304923
申请日：1923-07-21
Applicant: LAGEMANN GUSTAV P
Inventor： LAGEMANN GUSTAV P
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