US PATENT SUBCLASS 251 / 315.02
.~.~ Having a particular hardness (i.e., durometric property)

Current as of: June, 1999
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251 /   HD   VALVES AND VALVE ACTUATION

304  DF  ROTARY VALVES {5}
315.01  DF  .~ Ball valve {7}
315.02.~.~ Having a particular hardness (i.e., durometric property)

DEFINITION

Classification: 251/315.02

Having a particular hardness (i.e., durometric property):

(under subclass 315.01) Subject matter which relates to the durability of the ball valve.