1827786

Information

• Patent Grant
• 1827786

• References
• Source

• Patent Number

  1,827,786

• Date Filed

  Not available

• Date Issued

  Tuesday, October 20, 1931
  93 years ago

• CPC

  • B61L13/005 - optically actuated

• US Classifications

  • 246 - Railway switches and signals
  • 235 - Registers
  • 250 - Radiant energy
  • 315 - Electric lamp and discharge devices: systems
  • 361 - Electricity: electrical systems and devices
  • 377 - Electrical pulse counters, pulse dividers, or shift registers: circuits and systems