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公开(公告)号:US2196397A
公开(公告)日:1940-04-09
申请号:US16992337
申请日:1937-10-20
Applicant: MCDONALD STERLING B
Inventor: MCDONALD STERLING B
IPC: G01J3/52
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公开(公告)号:US979980A
公开(公告)日:1910-12-27
申请号:US1910550860
申请日:1910-03-22
Applicant: MCDONALD STERLING B
Inventor: MCDONALD STERLING B
CPC classification number: A61J19/00
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