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1.发明授权
公开(公告)号：US3470696A
公开(公告)日：1969-10-07
申请号：US3470696D
申请日：1968-03-26
Applicant: SVENSKA AB
Inventor： BJEREUS SVEN R
CPC classification number: B60T8/1862 , B60T8/1893 , F15B21/00 , G01L1/02
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