3887864

Information

• Patent Grant
• 3887864

• References
• Source

• Patent Number

  3,887,864

• Date Filed

  Not available

• Date Issued

  Tuesday, June 3, 1975
  49 years ago

• CPC

  • G08C19/04 - using variable resistance

• US Classifications

  • 323 - Electricity: power supply or regulation systems
  • 340 - Communications: electrical
  • 374 - Thermal measuring and testing