1548984

Information

• Patent Grant
• 1548984

• References
• Source

• Patent Number

  1,548,984

• Date Filed

  Not available

• Date Issued

  Tuesday, August 11, 1925
  99 years ago

• CPC

  • B61L5/206 - Signalling means for special purposes

• US Classifications

  • 246 - Railway switches and signals
  • 340 - Communications: electrical
  • 353 - Optics: image projectors
  • 362 - Illumination