US PATENT SUBCLASS 433 / 28
.~.~ Switch or valve controlled by presence of device on support


Current as of: June, 1999
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433 /   HD   DENTISTRY

25  DF  APPARATUS {20}
27  DF  .~ Having condition sensor to transmit signal to regulate indicating device or controller {1}
28.~.~ Switch or valve controlled by presence of device on support


DEFINITION

Classification: 433/28

Switch or valve controlled by presence of device on support:

(under subclass 27) Apparatus including a holder for storing an implement, and wherein removal or replacement of the implement on the holder activates or regulates the controller.