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31.Chelatable spiro [benzopyran-2, 2'-indoline] derivatives 失效
Title translation: 螯合螺[苯并吡喃-2,2'-二氢吲哚]衍生物公开(公告)号:US3299079A
公开(公告)日:1967-01-17
申请号:US53340666
申请日:1966-03-11
Applicant: POLAROID CORP
Inventor: TAYLOR LLOYD D
IPC: C07D491/10 , G03C1/685
CPC classification number: C07C205/44 , G03C1/685
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公开(公告)号:US3262781A
公开(公告)日:1966-07-26
申请号:US20779462
申请日:1962-07-05
Applicant: POLAROID CORP
Inventor: RYAN WILLIAM H , TAYLOR LLOYD D
IPC: G03C1/42
CPC classification number: G03C1/42
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公开(公告)号:US3218169A
公开(公告)日:1965-11-16
申请号:US11781861
申请日:1961-06-19
Applicant: POLAROID CORP
Inventor: KELLY JR WALTER D , ROTH PETER H , TAYLOR LLOYD D
IPC: G03C1/04
CPC classification number: G03C1/04
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