US PATENT SUBCLASS 29 / 890.145
.~.~ Flue connector device making


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

Internet Version by PATENTEC © 1999      Terms of Use



29 /   HD   METAL WORKING

592  DF  METHOD OF MECHANICAL MANUFACTURE {54}
890.14  DF  .~ Gas and water specific plumbing component making {9}
890.145.~.~ Flue connector device making


DEFINITION

Classification: 29/890.145

Flue connector device making:

Process under 890.14 wherein the manufactured article forms at least part of an enclosed passageway or channel for conveying flame, hot gases, or smoke to a chimney or to the ambient atmosphere.