US PATENT SUBCLASS 285 / 179.2
.~.~ Sheet-metal


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

Internet Version by PATENTEC © 1999      Terms of Use



285 /   HD   PIPE JOINTS OR COUPLINGS

179  DF  ELBOW {5}
179.1  DF  .~ With access opening {1}
179.2.~.~ Sheet-metal


DEFINITION

Classification: 285/179.2

Sheet-metal:

(under subclass 179.1) Subject matter wherein the conduit comprises very thin-walled material (e.g., heating duct, etc.).