2647426

Information

• Patent Grant
• 2647426

• References
• Source

• Patent Number

  2,647,426

• Date Filed

  Not available

• Date Issued

  Tuesday, August 4, 1953
  71 years ago

• CPC

  • G10H1/32 - Constructional details
  • G10H5/04 - with semiconductor devices as active elements
  • Y10S84/20 - Monophonic

• US Classifications

  • 084 - Music
  • 331 - Oscillators
  • 984 - Musical instruments