US PATENT SUBCLASS 137 / 624.16
.~.~.~.~ Attachable and removable element

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

561 R  DF  SYSTEMS {32}
624.11  DF  .~ Programmer or timer {5}
624.13  DF  .~.~ Repeating cycle {2}
624.15  DF  .~.~.~ Variable {2}
624.16.~.~.~.~ Attachable and removable element

DEFINITION

Classification: 137/624.16

(under subclass 624.15) Subject matter in which the change is brought about by either attaching or removing an element of the device.