847639

Information

• Patent Grant
• 847639

• References
• Source

• Patent Number

  847,639

• Date Filed

  Not available

• Date Issued

  Tuesday, March 19, 1907
  117 years ago

• CPC

  • G10B3/14 - Pedals or pedal boards
  • G10H1/34 - Switch arrangements

• US Classifications

  • 084 - Music