3719777

Information

• Patent Grant
• 3719777

• References
• Source

• Patent Number

  3,719,777

• Date Filed

  Not available

• Date Issued

  Tuesday, March 6, 1973
  51 years ago

• CPC

  • G10H3/03 - using pick-up means for reading recorded waves
  • Y10S84/06 - Cathode-ray tube

• US Classifications

  • 348 - Television
  • 084 - Music
  • 984 - Musical instruments