US PATENT SUBCLASS 105 / 25.1
.~.~ Ventilation

Current as of: June, 1999
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105 /   HD   RAILWAY ROLLING STOCK

1.4  DF  TRAINS {6}
8.1  DF  .~ Vestibule connections {6}
25.1.~.~ Ventilation

DEFINITION

Classification: 105/25.1

Ventilation:

(under subclass 8.1) Train including provision to permit passage to ambient atmosphere therethrough.