US PATENT SUBCLASS 181 / 228
.~.~ With exhaust pipe


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

Internet Version by PATENTEC © 1999      Terms of Use



181 /   HD   ACOUSTICS

175  DF  SOUND-MODIFYING MEANS {12}
212  DF  .~ Muffler, fluid conducting type {25}
228.~.~ With exhaust pipe


DEFINITION

Classification: 181/228

With exhaust pipe:

(under subclass 212) Subject matter comprising an attenuating fluid conducting device in combination with an additional pipe (i.e., exhaust pipe) connected to the exhaust outlet of the attenuating device.