US PATENT SUBCLASS 40 / 448
.~.~ Liquid crystal
Current as of:
June, 1999
Click
HD
for Main Headings
Click for
All Classes
Internet Version by
PATENTEC
© 1999
     
Terms of Use
40 /
HD
CARD, PICTURE, OR SIGN EXHIBITING
446
DF
CHANGING EXHIBITOR
{25}
447
DF
.~ Alphanumeric (monogram) device {4}
448
.~.~ Liquid crystal
DEFINITION
Classification: 40/448
Liquid crystal:
(under subclass 447) Exhibitor wherein the elements of the matrix are liquid crystal devices, the activation of which causes its color to change from that of its surrounding environment, thus presenting the number or letter desired.
SEE OR SEARCH CLASS
345, Computer Graphics Processing, Operator Interface Processing, and Selective Visual Display Systems,
50+, and 87+ for similar display systems with specific selective electrical control means.
349, Liquid Crystal Cells, Elements and Systems, appropriate subclasses for processes and apparatus for making a liquid crystal device.