1981577

Information

• Patent Grant
• 1981577

• References
• Source

• Patent Number

  1,981,577

• Date Filed

  Not available

• Date Issued

  Tuesday, November 20, 1934
  90 years ago

• CPC

  • F21S8/086 - with lighting device attached sideways of the standard
  • B61L5/1809 - Daylight signals

• US Classifications

  • 340 - Communications: electrical
  • 313 - Electric lamp and discharge devices
  • 362 - Illumination