US PATENT SUBCLASS 349 / FOR 142
.~.~ In smectic phase (359/104)

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 141  DF  .~ Cell containing liquid crystal of specified composition (359/103) {3}
FOR 142.~.~ In smectic phase (359/104)

DEFINITION

Classification: 349/FOR.142

In smectic phase:

Foreign Art Collection wherein the liquid crystal has a layered structure with a well-defined interlayer spacing and in which the molecular long axes in a given layer are parallel.