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公开(公告)号:US2787422A
公开(公告)日:1957-04-02
申请号:US37078753
申请日:1953-07-28
Applicant: BASF AG
Inventor: JOSEF WOELLHAF
CPC classification number: B02C19/061 , B02C19/005
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公开(公告)号:US3387322A
公开(公告)日:1968-06-11
申请号:US48034765
申请日:1965-08-17
Applicant: BASF AG
Inventor: JOSEF WOELLHAF , HERBERT WAGNER , WILHELM UHL , OTTO HEDDERICH
CPC classification number: B29C43/24 , B26D7/18 , Y10S425/235
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3.
公开(公告)号:US2753123A
公开(公告)日:1956-07-03
申请号:US33759753
申请日:1953-02-18
Applicant: BASF AG
Inventor: JOSEF WOELLHAF
CPC classification number: B02C19/061 , B02C19/06 , B02C23/00
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