US PATENT SUBCLASS 84 / 485 SR
.~.~.~.~ Slide rules


Current as of: June, 1999
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84 /   HD   MUSIC

453  DF  ACCESSORIES {6}
470 R  DF  .~ Teaching devices {4}
477 R  DF  .~.~ Indicators {5}
485 R  DF  .~.~.~ For fingering {1}
485 SR.~.~.~.~ Slide rules

Unofficial Alpha Subclasses: R SR

DEFINITION

Classification: 84/485

The music-sheet has marks showing what finger is to be used in producing a note.