US PATENT SUBCLASS 104 / 99
.~ Turntable type

Current as of: June, 1999
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104 /   HD   RAILWAYS

96  DF  TROLLEY TRANSFER {9}
99.~ Turntable type

DEFINITION

Classification: 104/99

(under subclass 96) Devices comprising frog-pieces and switches of turntable type having intermediate vertical axes.