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公开(公告)号：US2991389A
公开(公告)日：1961-07-04
申请号：US78728559
申请日：1959-01-16
Applicant: NAT COMPANY INC
Inventor： GRANT EUGENE F , SIMPSON GORDON E , MCCOUBREY ARTHUR O , BURITZ ROBERT S
IPC: H05H3/02
CPC classification number: H05H3/02
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