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公开(公告)号：US2051180A
公开(公告)日：1936-08-18
申请号：US70310233
申请日：1933-12-19
Applicant: STANDARD OIL CO CALIFORNIA
Inventor： RUZICKA CLARENCE J
IPC: F16K31/02
CPC classification number: F16K31/02 , Y10T137/3006 , Y10T137/3052 , Y10T137/7306
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