3717065

Information

• Patent Grant
• 3717065

• References
• Source

• Patent Number

  3,717,065

• Date Filed

  Not available

• Date Issued

  Tuesday, February 20, 1973
  51 years ago

• CPC

  • G09B13/02 - Dummy practice keyboard apparatus
  • G10C3/12 - Keyboards Keys

• US Classifications

  • 084 - Music