2230853

Information

• Patent Grant
• 2230853

• References
• Source

• Patent Number

  2,230,853

• Date Filed

  Not available

• Date Issued

  Tuesday, February 4, 1941
  83 years ago

• CPC

  • B61L5/1818 - using mobile coloured screen
  • Y10T403/32204 - with threaded joint
  • Y10T403/32631 - Universal ball and socket
  • Y10T403/32704 - Stud extends into ball

• US Classifications

  • 340 - Communications: electrical
  • 246 - Railway switches and signals
  • 362 - Illumination
  • 403 - Joints and connections