US PATENT SUBCLASS 238 / 172
.~ Vertical adjustment

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

151  DF  RAIL JOINTS {28}
172.~ Vertical adjustment

DEFINITION

Classification: 238/172

Devices for vertical adjustment of the rail-joint or one of the rail ends.

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168, and 215.