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公开(公告)号:US940860A
公开(公告)日:1909-11-23
申请号:US1909502523
申请日:1909-06-16
Applicant: DICKERSON CHARLES L
Inventor: DICKERSON CHARLES L
CPC classification number: G01F23/02
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公开(公告)号:US1652097A
公开(公告)日:1927-12-06
申请号:US12790526
申请日:1926-08-07
Applicant: DICKERSON CHARLES L
Inventor: DICKERSON CHARLES L
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公开(公告)号:US977375A
公开(公告)日:1910-11-29
申请号:US1910568313
申请日:1910-06-22
Applicant: DICKERSON CHARLES L
Inventor: DICKERSON CHARLES L
CPC classification number: G01F23/02
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