Stock material or miscellaneous articles – Circular sheet or circular blank
Patent
1998-09-03
2000-09-26
Evans, Elizabeth
Stock material or miscellaneous articles
Circular sheet or circular blank
428 644, 428 652, 428457, 428913, 43027011, 4304951, 430945, 369283, B32B 300
Patent
active
061240117
ABSTRACT:
Information-bearing discs are fabricated from a first disc and a second disc. The first disc has a first substantially planar surface and a second surface opposite to the first surface. The second surface has first information recorded on it by means of local changes in the distance of the second surface from the first surface. The second disc is thicker than the first disc and has opposite, substantially planar, third and fourth surfaces. The fourth surface may have second information recorded on it by means of local changes in the distance of the fourth surface from the third surface. The second disc is secured to the first disc so that the fourth surface faces the second surface.
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"Video's New Look," Popular Mechanics, p. 32 (May 1995).
Evans Elizabeth
WEA Manufacturing Inc.
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