US PATENT SUBCLASS 238 / 53
.~.~ Screw rod

Current as of: June, 1999
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238 /   HD   RAILWAYS: SURFACE TRACK

29  DF  TIES {9}
50  DF  .~ Rods {3}
53.~.~ Screw rod

DEFINITION

Classification: 238/53

The same as subclasses 51 and 52 for utilizing nuts and threaded ends other than turn-buckles for adjustments.