US PATENT SUBCLASS 267 / 72
.~.~.~ Drawbars inclosed


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

69  DF  ELASTIC EXTENSION DEVICES {2}
70  DF  .~ Compression spring {1}
71  DF  .~.~ Single {1}
72.~.~.~ Drawbars inclosed


DEFINITION

Classification: 267/72

(under subclass 71) Structure wherein the single spring element incloses a plurality of draw-bars.