728721

Information

• Patent Grant
• 728721

• References
• Source

• Patent Number

  728,721

• Date Filed

  Not available

• Date Issued

  Tuesday, May 19, 1903
  122 years ago

• CPC

  • G10B1/08 - of harmoniums
  • G10H1/0535 - by switches incorporating a mechanical vibrator, the envelope of the mechanical vibration being used as modulating signal

• US Classifications

  • 084 - Music