US PATENT SUBCLASS 15 / 418
.~.~.~ With area adjusting, e.g., restrictors

Current as of: June, 1999
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15 /   HD   BRUSHING, SCRUBBING, AND GENERAL CLEANING

3  DF  MACHINES {11}
300.1  DF  .~ With air blast or suction {26}
415.1  DF  .~.~ Nozzle {7}
418.~.~.~ With area adjusting, e.g., restrictors

DEFINITION

Classification: 15/418

(under subclass 415) Nozzles in which the area of the nozzle may be varied or restricted.

SEE OR SEARCH THIS CLASS, SUBCLASS:

416+, for nozzles wherein the area of one mouth is restricted by bringing into use a smaller mouth mounted therein.