发明名称 CREDIT CARD WITH MAGNIFYING LENS
摘要 <p>A financial transaction card (10) adapted for use in reading externally stored information includes a transparent, substantially non-foldable rigid base and a strip for carrying machine readable information (14). The rigid base comprises a magnifying lens (24). The lens is formed by machining a shallow cavity (204) in the rigid base; partially filling the cavity with a radiation curable liquid resin; impressing a lens pattern (36) on the surface of the resin with a die; and exposing the resin to radiation of sufficient intensity to cure the resin.</p>
申请公布号 WO1998024054(A1) 申请公布日期 1998.06.04
申请号 US1997021755 申请日期 1997.11.24
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