US PATENT SUBCLASS 708 / 143
.~.~.~ Nonmechanical key actuation

Current as of: June, 1999
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708 /   HD   ELECTRICAL COMPUTERS: ARITHMETIC PROCESSING AND CALCULATING

100  DF  ELECTRICAL DIGITAL CALCULATING COMPUTER {10}
131  DF  .~ Having specialized input {9}
142  DF  .~.~ Including specific keyboard-type information entry {4}
143.~.~.~ Nonmechanical key actuation

DEFINITION

Classification: 708/143

Nonmechanical key actuation:

(under subclass 142) Subject matter where input keys are operated by other than a push and release sequence (e.g., magnetic activation).

SEE OR SEARCH CLASS

335, Electricity: Magnetically Operated Switches, Magnets, and Electromagnets, appropriate subclasses for magnetic switches, per se.

337, Electricity: Electrothermally or Thermally Actuated Switches, appropriate subclasses for thermal switches per se.