3881107

Information

• Patent Grant
• 3881107

• References
• Source

• Patent Number

  3,881,107

• Date Filed

  Not available

• Date Issued

  Tuesday, April 29, 1975
  49 years ago

• CPC

  • G05D3/1409 - with dc amplifier chain
  • G05D3/14 - using an analogue comparing device

• US Classifications

  • 250 - Radiant energy
  • 331 - Oscillators
  • 356 - Optics: measuring and testing
  • 372 - Coherent light generators