US PATENT SUBCLASS 297 / 265.1
.~.~.~ Coil spring

Current as of: June, 1999
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297 /   HD   CHAIRS AND SEATS

258.1  DF  ROCKER-MOUNTED {7}
261.1  DF  .~ Track-mounted rocker (e.g., platform rocker) {6}
264.1  DF  .~.~ Spring return to neutral position {3}
265.1.~.~.~ Coil spring {1}
266.1  DF  .~.~.~.~> Extensible {1}

DEFINITION

Classification: 297/265.1

Coil spring:

(under subclass 264.1) Device wherein the elastic element is a spring formed as a helix.