2418104

Information

• Patent Grant
• 2418104

• References
• Source

• Patent Number

  2,418,104

• Date Filed

  Not available

• Date Issued

  Tuesday, March 25, 1947
  78 years ago

• CPC

  • H02P1/56 - simultaneously

• US Classifications

  • 379 - Telephonic communications
  • 104 - Railways
  • 191 - Electricity: transmission to vehicles
  • 246 - Railway switches and signals