3471687

Information

• Patent Grant
• 3471687

• References
• Source

• Patent Number

  3,471,687

• Date Filed

  Not available

• Date Issued

  Tuesday, October 7, 1969
  55 years ago

• CPC

  • H03F3/40 - with tubes only

• US Classifications

  • 330 - Amplifiers
  • 341 - Coded data generation or conversion
  • 708 - Electrical computers: arithmetic processing and calculating