3742308

Information

• Patent Grant
• 3742308

• References
• Source

• Patent Number

  3,742,308

• Date Filed

  Not available

• Date Issued

  Tuesday, June 26, 1973
  51 years ago

• CPC

  • G05F1/635 - being Hall effect devices, magnetoresistors or thermistors
  • B60Q1/385 - Electronic temporisation with relay amplification
  • B60Q11/007 - the lighting devices indicating change of drive direction
  • G05D23/192 - using a modification of the thermal impedance between a source and the load
  • G05D23/24 - the sensing element having a resistance varying with temperature
  • H03K3/42 - by the use, as active elements, of opto-electronic devices

• US Classifications

  • 361 - Electricity: electrical systems and devices
  • 331 - Oscillators