3665092

Information

• Patent Grant
• 3665092

• References
• Source

• Patent Number

  3,665,092

• Date Filed

  Not available

• Date Issued

  Tuesday, May 23, 1972
  52 years ago

• CPC

  • G10C3/12 - Keyboards Keys
  • G10B1/08 - of harmoniums

• US Classifications

  • 084 - Music