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公开(公告)号:US871434A
公开(公告)日:1907-11-19
申请号:US1906327880
申请日:1906-04-26
Applicant: OAKES ERNEST A , COONEY PETER A
Inventor: OAKES ERNEST A , COONEY PETER A
CPC classification number: G01D9/30
公开(公告)号:US871434A
公开(公告)日:1907-11-19
申请号:US1906327880
申请日:1906-04-26
Applicant: OAKES ERNEST A , COONEY PETER A
Inventor: OAKES ERNEST A , COONEY PETER A
CPC classification number: G01D9/30