3658425

Information

• Patent Grant
• 3658425

• References
• Source

• Patent Number

  3,658,425

• Date Filed

  Not available

• Date Issued

  Tuesday, April 25, 1972
  52 years ago

• CPC

  • G05D3/1409 - with dc amplifier chain
  • G01B9/02 - Interferometers for determining dimensional properties of, or relations between, measurement objects

• US Classifications

  • 356 - Optics: measuring and testing