984 / | HD | MUSICAL INSTRUMENTS |
250 | DD | AIDS FOR MUSIC (metronomes G04F 5/02; teaching music G09B 15/00) {G10G} {4} |
258 | DD | .~ Other auxillary devices, e.g., separate holders for resin, strings, conductor's batons, etc. {G10G 7/00} {2} |
260 | .~.~ Tuning forks or like devices {G10G 7/02} |