US PATENT SUBCLASS 381 / 186
.~.~ Plural diaphragms


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

Internet Version by PATENTEC © 1999      Terms of Use



381 /   HD   ELECTRICAL AUDIO SIGNAL PROCESSING SYSTEMS AND DEVICES

150  DF  ELECTRO-ACOUSTIC AUDIO TRANSDUCER {18}
182  DF  .~ Plural or compound reproducers {4}
186.~.~ Plural diaphragms


DEFINITION

Classification: 381/186

Plural diaphragms:

(under subclass 182) Subject matter including a speaker having plural flexible membranes, for radiating sound waves.