3178995

Information

• Patent Grant
• 3178995

• References
• Source

• Patent Number

  3,178,995

• Date Filed

  Not available

• Date Issued

  Tuesday, April 20, 1965
  59 years ago

• CPC

  • H03F3/40 - with tubes only

• US Classifications

  • 356 - Optics: measuring and testing
  • 250 - Radiant energy
  • 330 - Amplifiers