US PATENT SUBCLASS 238 / 377
.~ Bolt anchors and sleeves

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

310  DF  FASTENINGS {12}
377.~ Bolt anchors and sleeves

DEFINITION

Classification: 238/377

Bolt-anchors in ties and concrete and bolt-sleeves adapted for use only with track-fastenings.