US PATENT SUBCLASS 381 / 185
.~.~ Having common voice coil

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}
185.~.~ Having common voice coil

DEFINITION

Classification: 381/185

Having common voice coil:

(under subclass 182) Subject matter where two or more flexible membranes are driven by a common helix of conductive material carrying an electrical information signal.