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公开(公告)号:US3384347A
公开(公告)日:1968-05-21
申请号:US55148966
申请日:1966-04-27
Applicant: AMETEK INC
Inventor: RUSSELL BLEASE J
IPC: D06F71/08 , D06F71/16
CPC classification number: D06F71/08 , D06F71/16