US PATENT SUBCLASS 359 / 4
.~.~ Recyclable

Current as of: June, 1999
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359 /   HD   OPTICS: SYSTEMS (INCLUDING COMMUNICATION) AND ELEMENTS

1  DF  HOLOGRAPHIC SYSTEM OR ELEMENT {16}
3  DF  .~ Having particular recording medium {2}
4.~.~ Recyclable {3}
5  DF  .~.~.~> Magnetic material
6  DF  .~.~.~> Sandwich having photoconductor
7  DF  .~.~.~> Crystalline material

DEFINITION

Classification: 359/4

Recyclable:

(under subclass 3) Subject matter in which the recording medium is of such a nature that the recorded information can be erased to permit further record-erase cycles.

(1) Note. Included here are photochromics, thermochromics, dye cells, magnetic films, etc.