US PATENT SUBCLASS 181 / 289
.~.~ Light permeable

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}
284  DF  .~ Sound absorbing panels {8}
289.~.~ Light permeable

DEFINITION

Classification: 181/289

Light permeable:

(under subclass 284) Subject matter which is translucent or transparent to visible radiation.