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公开(公告)号:US3535780A
公开(公告)日:1970-10-27
申请号:US3535780D
申请日:1967-10-04
Applicant: RALPH BERGER
Inventor: BERGER RALPH
CPC classification number: H05K3/103 , H05K1/0393 , H05K1/189 , H05K3/386 , H05K7/06 , H05K2201/09236 , H05K2201/1028 , H05K2201/10401 , Y10T29/49139 , Y10T29/49158 , Y10T29/49165 , Y10T29/49828 , Y10T29/49829 , Y10T29/51 , Y10T29/5145 , Y10T29/53183