2900861

Information

• Patent Grant
• 2900861

• References
• Source

• Patent Number

  2,900,861

• Date Filed

  Not available

• Date Issued

  Tuesday, August 25, 1959
  65 years ago

• CPC

  • G10H5/16 - using cathode ray tube

• US Classifications

  • 084 - Music
  • 984 - Musical instruments