2169762

Information

• Patent Grant
• 2169762

• References
• Source

• Patent Number

  2,169,762

• Date Filed

  Not available

• Date Issued

  Tuesday, August 15, 1939
  85 years ago

• CPC

  • G10H1/043 - Continuous modulation
  • G10H5/08 - tones generated by heterodyning

• US Classifications

  • 381 - Electrical audio signal processing systems and devices
  • 084 - Music
  • 984 - Musical instruments