2280775

Information

• Patent Grant
• 2280775

• References
• Source

• Patent Number

  2,280,775

• Date Filed

  Not available

• Date Issued

  Tuesday, April 28, 1942
  82 years ago

• CPC

  • G08C19/04 - using variable resistance

• US Classifications

  • 340 - Communications: electrical
  • 116 - Signals and indicators
  • 235 - Registers
  • 338 - Electrical resistors