US PATENT SUBCLASS 238 / 129
.~ Trough and filler

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

122  DF  RAILS {20}
129.~ Trough and filler

DEFINITION

Classification: 238/129

Rails formed of trough-shaped members or channel-irons adapted to receive tread-surface fillers of wood or metal, so as to substantially fill the troughs or channels.