US PATENT SUBCLASS 238 / 54
.~ Cross section
Current as of:
June, 1999
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238 /
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RAILWAYS: SURFACE TRACK
29
DF
TIES
{9}
54
.~ Cross section {6}
55
DF
.~.~
> Two-part {3}
59
DF
.~.~
> Channel flange down {2}
62
DF
.~.~
> Channel flange up {2}
65
DF
.~.~
> I-beam {1}
67
DF
.~.~
> T-shape {2}
70
DF
.~.~
> Tubular {4}
DEFINITION
Classification: 238/54
Cross-sectional forms of integral ties not otherwise classified below.
