US PATENT SUBCLASS 238 / 238
.~.~.~ Longitudinal lock
Current as of:
June, 1999
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238 /
HD
RAILWAYS: SURFACE TRACK
151
DF
RAIL JOINTS
{28}
230
DF
.~ Scarf {5}
236
DF
.~.~ Laterally assembled {2}
238
.~.~.~ Longitudinal lock {1}
239
DF
.~.~.~.~
> Twin
DEFINITION
Classification: 238/238
(under subclass 236), except that the integral engaging parts prevent the longitudinal separation of the rails.