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公开(公告)号:US1639947A
公开(公告)日:1927-08-23
申请号:US63194023
申请日:1923-04-13
Applicant: STANDARD DEV CO
Inventor: KRAUS CHARLES A , CALLIS CONRAL C
IPC: C07F7/22
CPC classification number: C07F7/2212
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公开(公告)号:US1612131A
公开(公告)日:1926-12-28
申请号:US65575223
申请日:1923-08-04
Applicant: STANDARD DEV CO
Inventor: KRAUS CHARLES A , CALLIS CONRAL C
IPC: C07F7/24
CPC classification number: C07F7/24
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公开(公告)号:US1655908A
公开(公告)日:1928-01-10
申请号:US63009023
申请日:1923-04-05
Applicant: STANDARD DEV CO
Inventor: KRAUS CHARLES A , CALLIS CONRAL C
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公开(公告)号:US1628050A
公开(公告)日:1927-05-10
申请号:US62873423
申请日:1923-03-30
Applicant: STANDARD DEV CO
Inventor: KRAUS CHARLES A , CALLIS CONRAL C
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