US PATENT SUBCLASS 104 / 140
SLOTTED CONDUIT

Current as of: June, 1999
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104 /   HD   RAILWAYS

140SLOTTED CONDUIT {4}
141  DF  .~> Crossings
142  DF  .~> Yokes {2}
145  DF  .~> Grip or plow traps
146  DF  .~> Adjustable slots

DEFINITION

Classification: 104/140

(under the class definition) Railways in which the trackway is provided with an underground slotted conduit for the reception of traction elements, such as electric conductors or traction-cables.