US PATENT SUBCLASS 4 / 361
.~.~.~ Pneumatic or hydraulic adjustability

Current as of: June, 1999
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4 /   HD   BATHS, CLOSETS, SINKS, AND SPITTOONS

300  DF  FLUSH CLOSET {22}
353  DF  .~ Tank only {9}
354  DF  .~.~ Pressure tank {6}
361.~.~.~ Pneumatic or hydraulic adjustability

DEFINITION

Classification: 4/361

Pneumatic or hydraulic adjustability:

(under subclass 354) Subject matter wherein the amount of liquid in the tank is controlled by means to change the fluid and/or air pressure in the tank.