US PATENT SUBCLASS 405 / 191
.~.~ From surface

Current as of: June, 1999
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405 /   HD   HYDRAULIC AND EARTH ENGINEERING

185  DF  DIVING {6}
190  DF  .~ Remote control {1}
191.~.~ From surface

DEFINITION

Classification: 405/191

From surface:

(under subclass 190) Method or apparatus wherein the isolated environment is located at or above the water surface.