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公开(公告)号：US3086608A
公开(公告)日：1963-04-23
申请号：US2904460
申请日：1960-05-13
Applicant: PERFECT CIRCLE CORP
Inventor： ROBERT MARIE
CPC classification number: G01P1/10 , B60K31/14 , F02D9/00 , F02D31/002 , F02D2700/0233
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