US PATENT SUBCLASS 137 / 625.15
.~.~.~.~ Rotary

Current as of: June, 1999
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137 /   HD   FLUID HANDLING

561 R  DF  SYSTEMS {32}
625  DF  .~ Multi-way valve unit {12}
625.12  DF  .~.~ Sequentially progressive opening or closing of plural ports {1}
625.13  DF  .~.~.~ With subsequent closing of first port {2}
625.15.~.~.~.~ Rotary {1}
625.16  DF  .~.~.~.~.~> Plug

DEFINITION

Classification: 137/625.15

(under subclass 625.13) Devices which comprise valve units which only rotate.