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公开(公告)号:US3485365A
公开(公告)日:1969-12-23
申请号:US3485365D
申请日:1968-01-11
Applicant: DORR OLIVER INC
Inventor: KELLER LEON D
CPC classification number: B03B5/66 , Y10T137/7931
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2.
公开(公告)号:US3409134A
公开(公告)日:1968-11-05
申请号:US50060565
申请日:1965-10-22
Applicant: DORR OLIVER INC
Inventor: WALLACE GORDON C , KELLER LEON D
IPC: B01D33/21
CPC classification number: B01D33/21 , B01D33/466 , B01D33/48 , B01D33/804 , B01D2201/282
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公开(公告)号:US3452874A
公开(公告)日:1969-07-01
申请号:US3452874D
申请日:1967-11-02
Applicant: DORR OLIVER INC
Inventor: KELLER LEON D , SANDSTROM ERIC L
CPC classification number: B01D33/82 , B01D33/06 , B01D2201/16
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