2456777

Information

• Patent Grant
• 2456777

• References
• Source

• Patent Number

  2,456,777

• Date Filed

  Not available

• Date Issued

  Tuesday, December 21, 1948
  76 years ago

• CPC

  • B61L5/1809 - Daylight signals

• US Classifications

  • 310 - Electrical generator or motor structure
  • 246 - Railway switches and signals
  • 362 - Illumination