2442569

Information

• Patent Grant
• 2442569

• References
• Source

• Patent Number

  2,442,569

• Date Filed

  Not available

• Date Issued

  Tuesday, June 1, 1948
  76 years ago

• CPC

  • B61L5/206 - Signalling means for special purposes

• US Classifications

  • 340 - Communications: electrical
  • 362 - Illumination