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公开(公告)号:US1767220A
公开(公告)日:1930-06-24
申请号:US32649428
申请日:1928-12-17
Applicant: MALM ROYAL D
Inventor: MALM ROYAL D
IPC: B23K11/14
CPC classification number: B23K11/14 , B23K2201/06 , Y10T428/12271 , Y10T428/1241
公开(公告)号:US1767220A
公开(公告)日:1930-06-24
申请号:US32649428
申请日:1928-12-17
Applicant: MALM ROYAL D
Inventor: MALM ROYAL D
IPC: B23K11/14
CPC classification number: B23K11/14 , B23K2201/06 , Y10T428/12271 , Y10T428/1241