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公开(公告)号:US1855767A
公开(公告)日:1932-04-26
申请号:US41761129
申请日:1929-12-31
Applicant: NEUMAN JACOB J
Inventor: NEUMAN JACOB J
CPC classification number: G06M7/04 , G06M1/08 , Y10S198/958
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公开(公告)号:US1548443A
公开(公告)日:1925-08-04
申请号:US72761324
申请日:1924-07-23
Applicant: IRWIN COMFORT
Inventor: IRWIN COMFORT
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公开(公告)号:US1494492A
公开(公告)日:1924-05-20
申请号:US47751421
申请日:1921-06-14
Applicant: SIDNEY LEE
Inventor: SIDNEY LEE
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公开(公告)号:US1451281A
公开(公告)日:1923-04-10
申请号:US52462021
申请日:1921-12-24
Applicant: AUGUST SUNDH , WILLIAM WESTERMAN
Inventor: AUGUST SUNDH , WILLIAM WESTERMAN
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公开(公告)号:US1429983A
公开(公告)日:1922-09-26
申请号:US31905819
申请日:1919-08-22
Applicant: MEASUREGRAPH CO
Inventor: DOUGLAS TURNER
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