US PATENT SUBCLASS 200 / 86 R
.~ Treads

Current as of: June, 1999
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200 /   HD   ELECTRICITY: CIRCUIT MAKERS AND BREAKERS

85 R  DF  WEIGHT {2}
86 R.~ Treads {1}
86 A  DF  .~.~> Roadway

Unofficial Alpha Subclasses: R A

DEFINITION

Classification: 200/86

(under subclass 85) Circuit-controllers incorporated in mats or treads and adapted to be operated by a person stepping upon them.

SEE OR SEARCH CLASS

340, Communications: Electrical,

666, for electric alarms which are automatically responsive to the movement of a tread or treadle.