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US 4,451,068 AGranted
Engraved image identification card with opaque cover layer
AssigneeCalifornia Interface and Software Limited Partnership
InventorsJohn S. Hall, Barry C. Phelps
Life of this patent
Estimating the term…
Abstract
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.
Claims7
A two-layer engraved identification card comprising:
- a translucent, single layer, planar member having a first major surface and a second major surface opposite the first major surface, the first major surface having an image engraved therein to define engraved regions and non engraved regions for generating an observed image on the translucent planar member the engraved regions being entirely contained in the translucent single layer planar member;
- and
- a non-engraved opaque planar member abutting directly against and covering one of the first and second major surfaces for enhancing the contrast between the non-engraved and the engraved regions whereby the observed image is more readily seen, the other of the first and second major surfaces being completely uncovered.
Dependencies are inferred from the claim text.