US PATENT SUBCLASS 433 / 91
.~ Having suction orifice

Current as of: June, 1999
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433 /   HD   DENTISTRY

25  DF  APPARATUS {20}
91.~ Having suction orifice {5}
92  DF  .~.~> And suction pump or material separator
93  DF  .~.~> And mouth prop, tongue guard or depressor, or cheek spreader
94  DF  .~.~> And clamp or positioner
95  DF  .~.~> And control valve for suction
96  DF  .~.~> In flexible conduit or eduction tube

DEFINITION

Classification: 433/91

Having suction orifice:

(under subclass 25) Apparatus including a nozzle at which a low pressure is created to draw air or material through or around a nozzle.

SEE OR SEARCH CLASS

15, Brushing, Scrubbing, and General Cleaning,

300.1+, for devices which clean by suction.

604, Surgery,

131+, for surgical aspirators.