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1.
公开(公告)号:US3058907A
公开(公告)日:1962-10-16
申请号:US1611460
申请日:1960-03-03
Applicant: ENGELHARD IND INC
Inventor: NORDSTRAND ROBERT A VAN , TETER JOHN W , KEITH CARL D , HAUEL ANNA P
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公开(公告)号:US2838444A
公开(公告)日:1958-06-10
申请号:US48972655
申请日:1955-02-21
Applicant: ENGELHARD IND INC
Inventor: TETER JOHN W , GRING JOHN L , KEITH CARL D
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公开(公告)号:US2885369A
公开(公告)日:1959-05-05
申请号:US29990852
申请日:1952-07-19
Applicant: ENGELHARD IND INC
Inventor: TETER JOHN W , KEITH CARL D
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公开(公告)号:US2838375A
公开(公告)日:1958-06-10
申请号:US71683158
申请日:1958-02-05
Applicant: ENGELHARD IND INC
Inventor: TETER JOHN W , GRING JOHN L , KEITH CARL D
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公开(公告)号:US2938211A
公开(公告)日:1960-05-24
申请号:US53551655
申请日:1955-09-20
Applicant: ENGELHARD IND INC
Inventor: NORDSTRAND ROBERT A VAN , TETER JOHN W , KEITH CARL D , HAUEL ANNA P
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