US PATENT SUBCLASS 374 / 191
.~.~.~ With optical element (e.g., magnifying)

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

Internet Version by PATENTEC © 1999      Terms of Use


374 /   HD   THERMAL MEASURING AND TESTING

100  DF  TEMPERATURE MEASUREMENT (E.G., THERMOMETER) {13}
187  DF  .~ Mechanical (e.g., expansion or contraction of materials) {10}
190  DF  .~.~ Indicating tube type {4}
191.~.~.~ With optical element (e.g., magnifying)

DEFINITION

Classification: 374/191

With optical element (e.g., magnifying):

(under subclass 190) Subject matter combined with a distinct arrangement for optically modifying the temperature

indication.

SEE OR SEARCH THIS CLASS, SUBCLASS:

193, for an indicating tube itself shaped so as to form an optical element.