US PATENT SUBCLASS 454 / 258
.~.~ Air temperature responsive

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

Internet Version by PATENTEC © 1999      Terms of Use


454 /   HD   VENTILATION

254  DF  HAVING INLET AIRWAY {11}
256  DF  .~ Including automatic control means {2}
258.~.~ Air temperature responsive

DEFINITION

Classification: 454/258

Air temperature responsive:

(under subclass 256) Subject matter wherein the relocatable slats or slat portions relocate due to changes in the hotness or coldness of air.

SEE OR SEARCH CLASS

236, Automatic Temperature and Humidity Regulation, particularly

49.1, for automatic temperature and humidity regulation of a ventilator.