US PATENT SUBCLASS 105 / 73
.~ Traction regulators

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

26.05  DF  LOCOMOTIVES {24}
73.~ Traction regulators {4}
74  DF  .~.~> Airplane
75  DF  .~.~> Variable driver load
76  DF  .~.~> Electric
77  DF  .~.~> Electromagnetic {1}

DEFINITION

Classification: 105/73

(under subclass 26) Devices for increasing the tractive effect of a locomotive.