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公开(公告)号:CA442963A
公开(公告)日:1947-07-15
申请号:CA442963D
Applicant: STANDARD OIL DEV CO
Inventor: BEEKLEY NATHAN S JR
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公开(公告)号:CA426014A
公开(公告)日:1945-03-06
申请号:CA426014D
Applicant: STANDARD OIL DEV CO
Inventor: BEEKLEY NATHAN S JR , SPARKS WILLIAM J
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