US PATENT SUBCLASS 213 / 30
.~.~.~ Plate springs

Current as of: June, 1999
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213 /   HD   RAILWAY DRAFT APPLIANCES

7  DF  CUSHIONED {9}
22  DF  .~ Combined spring and friction {8}
29  DF  .~.~ Interengaging friction springs {1}
30.~.~.~ Plate springs

DEFINITION

Classification: 213/30

(under subclass 29) Devices wherein the springs are plate springs.