US PATENT SUBCLASS 267 / 157
.~.~ Also compressible or expansible

Current as of: June, 1999
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267 /   HD   SPRING DEVICES

154  DF  TORSION {1}
155  DF  .~ Coil {2}
157.~.~ Also compressible or expansible

DEFINITION

Classification: 267/157

(under subclass 155) Spring device which is subject to a compressive or expansive force; as well as said first-mentioned force.