3881102

Information

• Patent Grant
• 3881102

• References
• Source

• Patent Number

  3,881,102

• Date Filed

  Not available

• Date Issued

  Tuesday, April 29, 1975
  49 years ago

• CPC

  • G05D3/1418 - with ac amplifier chain
  • G01D5/26 - characterised by optical transfer means

• US Classifications

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