US PATENT SUBCLASS 114 / 342
.~ Hull within a hull

Current as of: June, 1999
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114 /   HD   SHIPS

312  DF  SUBMERSIBLE DEVICE {15}
342.~ Hull within a hull

DEFINITION

Classification: 114/342

Hull within a hull:

(under subclass 312) Device wherein the exterior surface of the vessel is formed as a plurality of spaced apart shells one within the other.