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公开(公告)号：US3008043A
公开(公告)日：1961-11-07
申请号：US82181159
申请日：1959-06-22
Applicant: NAT COMPANY INC
Inventor： CAULK JEWELL R
CPC classification number: H04B1/0092 , H03J7/065 , H04B1/26
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