US PATENT SUBCLASS 104 / 71
.~ Submarines

Current as of: June, 1999
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104 /   HD   RAILWAYS

53  DF  AMUSEMENT {25}
71.~ Submarines

DEFINITION

Classification: 104/71

(under subclass 53) Apparatus having boats and cars designed to run entirely submerged and having guideways for determining their path of movement.