2182155

Information

• Patent Grant
• 2182155

• References
• Source

• Patent Number

  2,182,155

• Date Filed

  Not available

• Date Issued

  Tuesday, December 5, 1939
  85 years ago

• CPC

  • B61L7/10 - for light signals

• US Classifications

  • 340 - Communications: electrical
  • 359 - Optical: systems and elements
  • 362 - Illumination