US PATENT SUBCLASS 349 / FOR 130
.~.~ Reversal in sign of dielectric anisotropy (359/92)

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349 /   HD   LIQUID CRYSTAL CELLS, ELEMENTS AND SYSTEMS

193  DF  LIQUID CRYSTAL OPTICAL ELEMENT {21}
FOR 129  DF  .~ Electrode detail (359/87) {1}
FOR 130.~.~ Reversal in sign of dielectric anisotropy (359/92)

DEFINITION

Classification: 349/FOR.130

Reversal in sign of dielectric anisotropy:

Foreign Art Collection wherein the polarity of the dielectric anisotropy changes from positive to negative or vice versa.