US PATENT SUBCLASS 349 / FOR 109
.~.~.~ With particular switching device (359/57)

Current as of: June, 1999
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349 /   HD   LIQUID CRYSTAL CELLS, ELEMENTS AND SYSTEMS

193  DF  LIQUID CRYSTAL OPTICAL ELEMENT {21}
FOR 106  DF  .~ Having electrodes arranged into rows and columns (359/54) {2}
FOR 107  DF  .~.~ With liquid crystal electrode excitation (359/55) {2}
FOR 109.~.~.~ With particular switching device (359/57)

DEFINITION

Classification: 349/FOR.109

With particular switching device:

Foreign Art Collection which includes an electrical device which toggles a portion of the liquid crystal matrix off and on.