US PATENT SUBCLASS 405 / 187
.~.~ Rigid element

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

185  DF  DIVING {6}
186  DF  .~ Suit or accessory therefor {1}
187.~.~ Rigid element

DEFINITION

Classification: 405/187

Rigid element:

(under subclass 186) Apparatus formed with a relatively inflexible material to protect the wearer from the pressure of the water.