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公开(公告)号：US2561763A
公开(公告)日：1951-07-24
申请号：US6710248
申请日：1948-12-24
Applicant: BUFFALO ELECTRONICS CORP
Inventor： WATERS EDWARD C , MCCULLOUGH FRANK S
IPC: G01P13/00
CPC classification number: G01P13/0073 , Y10S193/02
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