US PATENT SUBCLASS 116 / 207
.~.~ By heat

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

Internet Version by PATENTEC © 1999      Terms of Use


116 /   HD   SIGNALS AND INDICATORS

200  DF  INDICATORS {32}
206  DF  .~ Chemically activated type {1}
207.~.~ By heat

DEFINITION

Classification: 116/207

By heat:

(under subclass 206) Device wherein the chemical reaction is caused by a raise in temperature.

SEE OR SEARCH CLASS

374, Thermal Measuring and Testing,

106, and 162 for quantitative color change thermometers.

436, Chemistry: Analytical and Immunological Testing,

1, 183 for determining qualitatively or quantitatively the pressure of chemical compound by heat.