US PATENT SUBCLASS 984 / 119
.~.~ Tuning devices, e.g., pegs, pins, friction discs, etc. {G10D 3/14}


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984 /   HD   MUSICAL INSTRUMENTS

100  DD  MUSICAL INSTRUMENTS NOT OTHERWISE PROVIDED FOR {aspects of automatic actuation subclasses 200+; Combinations of microphones, pick-ups or amplifiers with musical instruments subclasses 300+; Sound-producing devices not regarded as musical instruments or parts thereof G10K} {G10D} {8}
110  DD  .~ Details of, or accessories for, stringed musical instruments {G10D 3/00} {9}
119.~.~ Tuning devices, e.g., pegs, pins, friction discs, etc. {G10D 3/14} {1}
120  DD  .~.~.~> Devices for altering the string tension during playing {G10D 3/14B} {1}