3699468

Information

• Patent Grant
• 3699468

• References
• Source

• Patent Number

  3,699,468

• Date Filed

  Not available

• Date Issued

  Tuesday, October 17, 1972
  52 years ago

• CPC

  • H03G3/301 - the gain being continuously variable
  • H03G1/0047 - using photo-electric elements

• US Classifications

  • 330 - Amplifiers