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公开(公告)号:US1218946A
公开(公告)日:1917-03-13
申请号:US7118716
申请日:1916-01-10
Applicant: LAING CLAYTON
Inventor: LAING CLAYTON
CPC classification number: G01J1/124
公开(公告)号:US1218946A
公开(公告)日:1917-03-13
申请号:US7118716
申请日:1916-01-10
Applicant: LAING CLAYTON
Inventor: LAING CLAYTON
CPC classification number: G01J1/124