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公开(公告)号：US3060385A
公开(公告)日：1962-10-23
申请号：US85160559
申请日：1959-11-09
Applicant: NAT COMPANY INC
Inventor： LIPPS JR FREDERICK W , HOLLOWAY JOSEPH H
IPC: H05H3/00
CPC classification number: H05H3/00
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