3246309

Information

• Patent Grant
• 3246309

• References
• Source

• Patent Number

  3,246,309

• Date Filed

  Not available

• Date Issued

  Tuesday, April 12, 1966
  58 years ago

• CPC

  • H03F3/40 - with tubes only

• US Classifications

  • 340 - Communications: electrical
  • 324 - Electricity: measuring and testing