US PATENT SUBCLASS 434 / 329
.~.~ Involving fluid flow

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


434 /   HD   EDUCATION AND DEMONSTRATION

322  DF  QUESTION OR PROBLEM ELICITING RESPONSE {8}
327  DF  .~ Correctness of response indicated to examine by self-operating or examinee actuated means {12}
329.~.~ Involving fluid flow

DEFINITION

Classification: 434/329

Involving fluid flow:

(under subclass 327) Subject matter wherein the correctness of the examinee's response is revealed by means involving movement of a fluid.