US PATENT SUBCLASS 181 / 268
.~.~.~ Multi-passage

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}
264  DF  .~.~ With baffle or baffle structure {9}
268.~.~.~ Multi-passage

DEFINITION

Classification: 181/268

Multipassage:

(under subclass 264) Subject matter having a plurality of passages between which the moving fluid is divided.