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公开(公告)号:US1797676A
公开(公告)日:1931-03-24
申请号:US37331529
申请日:1929-06-24
Applicant: STANDARD OIL CO CALIFORNIA
Inventor: BAKER MILTON L
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公开(公告)号:US1789291A
公开(公告)日:1931-01-20
申请号:US39093229
申请日:1929-09-07
Applicant: STANDARD OIL CO CALIFORNIA
Inventor: BAKER MILTON L
IPC: F16N3/08
CPC classification number: F16N3/08
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