3402326

Information

• Patent Grant
• 3402326

• References
• Source

• Patent Number

  3,402,326

• Date Filed

  Not available

• Date Issued

  Tuesday, September 17, 1968
  56 years ago

• CPC

  • H03F17/00 - Amplifiers using electroluminescent element or photocell
  • F16P3/14 - the means being photocells or other devices sensitive without mechanical contact
  • G05D9/12 - characterised by the use of electric means
  • H02H1/0069 - by means of light or heat rays
  • H02H3/14 - responsive to occurrence of voltage on parts normally at earth potential
  • H02H3/33 - using summation current transformers

• US Classifications

  • 361 - Electricity: electrical systems and devices