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公开(公告)号：US3191671A
公开(公告)日：1965-06-29
申请号：US68562757
申请日：1957-09-23
Applicant: CALIFORNIA RESEARCH CORP
Inventor： HORNE GEORGE H , MILTON LUDWIG
IPC: F16L53/00
CPC classification number: F16L53/32
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