US PATENT SUBCLASS 104 / 3
.~ Built-up sections

Current as of: June, 1999
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104 /   HD   RAILWAYS

2  DF  TRACK LAYERS {11}
3.~ Built-up sections

DEFINITION

Classification: 104/3

(under subclass 2) Apparatus and tools in which the rails and ties are spiked or fastened together in completed sections before they are positioned on the roadbed.