US PATENT SUBCLASS 222 / 34
.~.~ With means to prevent zero setting during discharge

Current as of: June, 1999
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222 /   HD   DISPENSING

23  DF  WITH RECORDER, REGISTER, INDICATOR, SIGNAL OR EXHIBITOR {11}
32  DF  .~ With zero-setting mechanism {3}
34.~.~ With means to prevent zero setting during discharge

DEFINITION

Classification: 222/34

(under subclass 32) Dispensers having means to prevent setting the register to zero while material is being discharged.

SEE OR SEARCH THIS CLASS, SUBCLASS:

15, for selectively preset mechanism with means to prevent change of setting during discharge.

435, for means for preventing change of volume adjusting means of a stationary trap chamber during discharge.