US PATENT SUBCLASS 84 / 373
.~.~.~ Couplers

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

Internet Version by PATENTEC © 1999      Terms of Use


84 /   HD   MUSIC

1  DF  INSTRUMENTS {9}
330  DF  .~ Wind {5}
351  DF  .~.~ Reed organs {10}
373.~.~.~ Couplers

DEFINITION

Classification: 84/373

Devices to cause two notes, usually an octave apart, to sound when one key is depressed.

SEE OR SEARCH THIS CLASS, SUBCLASS:

168, 235 and 340.