发明名称 Engraved image identification card with opaque cover layer
摘要 An engraved image identification card has a translucent planar base member with a multiplicity of engraved scores extending into one of its surfaces with an opaque layer positioned adjacent either the engraved side of the translucent member or the non-engraved side of the translucent member opposite the engraved side to provide enhancement of the contrast between the engraved and non-engraved regions in the translucent member.
申请公布号 US4451068(A) 申请公布日期 1984.05.29
申请号 US19810330348 申请日期 1981.12.14
申请人 CALIFORNIA INTERFACE AND SOFTWARE LIMITED PARTNERSHIP 发明人 HALL, JOHN S.;PHELPS, BARRY C.
分类号 B42D15/10;(IPC1-7):B42D15/00 主分类号 B42D15/10
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