US PATENT SUBCLASS 433 / 185
.~.~.~ Including valve or air passageway leading from suction area

Current as of: June, 1999
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433 /   HD   DENTISTRY

167  DF  PROSTHODONTICS {13}
172  DF  .~ Holding or positioning denture in mouth {5}
184  DF  .~.~ By suction {3}
185.~.~.~ Including valve or air passageway leading from suction area

DEFINITION

Classification: 433/185

Including valve or air passageway leading from suction area:

(under subclass 184) Subject matter wherein means are provided to selectively establish communication between the suction chamber and the environment.