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公开(公告)号:US905287A
公开(公告)日:1908-12-01
申请号:US1908452790
申请日:1908-09-12
Applicant: CHIPMAN HARRY E
Inventor: CHIPMAN HARRY E
CPC classification number: B22C9/062 , B28B7/0017
公开(公告)号:US905287A
公开(公告)日:1908-12-01
申请号:US1908452790
申请日:1908-09-12
Applicant: CHIPMAN HARRY E
Inventor: CHIPMAN HARRY E
CPC classification number: B22C9/062 , B28B7/0017