发明名称 Record matrix preparation
摘要 An apparatus, for use in an electroplating arrangement, for establishing electrical contact with a metal or metalized cathode plate used in production of a disc record matrix. The apparatus includes an electrically conductive contact member and a clamping means for holding the contact member against a cathode plate supported by the apparatus. The contact member and clamping means are shaped so that electrical contact is established at the periphery only of the cathode plate.
申请公布号 US4364816(A) 申请公布日期 1982.12.21
申请号 US19800213483 申请日期 1980.12.05
申请人 EMI LIMITED 发明人 BIRT, DAVID E.
分类号 C25D17/06;(IPC1-7):C25D1/10 主分类号 C25D17/06
代理机构 代理人
主权项
地址