US PATENT SUBCLASS 114 / 40
ICE BREAKERS

Current as of: June, 1999
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114 /   HD   SHIPS

40ICE BREAKERS {2}
41  DF  .~> Rams
42  DF  .~> Cutters

DEFINITION

Classification: 114/40

Vessels or boats designed and operated to break and cut up ice-floes or to open channels for the passage of vessels.