US PATENT SUBCLASS 345 / 169
.~.~ Portable (i.e., handheld, calculator, remote controller)

Current as of: June, 1999
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345 /   HD   COMPUTER GRAPHICS PROCESSING, OPERATOR INTERFACE PROCESSING, AND SELECTIVE VISUAL DISPLAY SYSTEMS

156  DF  DISPLAY PERIPHERAL INTERFACE INPUT DEVICE {8}
168  DF  .~ Including keyboard {4}
169.~.~ Portable (i.e., handheld, calculator, remote controller)

DEFINITION

Classification: 345/169

Portable (i.e., handheld, calculator, remote controller):

(under subclass 168) Subject matter wherein the keyboard is compact and can be held within the palm of an user.

SEE OR SEARCH CLASS

708, Electrical Computers: Arithmetic Processing and Calculating,

142+, for electric digital calculating computers with specialized input including keyboard data entry.