US PATENT SUBCLASS 238 / 75-- .~.~.~.~ Separate bottom

US PATENT SUBCLASS 238 / 75
.~.~.~.~ Separate bottom

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

29	DF	TIES {9}
54	DF	.~ Cross section {6}
70	DF	.~.~ Tubular {4}
72	DF	.~.~.~ Rectangular {6}
75		.~.~.~.~ Separate bottom

DEFINITION

Classification: 238/75

Ties of rectangular box form having separately-formed bottom plates.