2846508

Information

• Patent Grant
• 2846508

• References
• Source

• Patent Number

  2,846,508

• Date Filed

  Not available

• Date Issued

  Tuesday, August 5, 1958
  66 years ago

• CPC

  • H04B3/544 - Setting up communications; Call and signalling arrangements
  • B61L3/10 - using current passing between devices along the route and devices on the vehicle train
  • H04B1/44 - Transmit/receive switching

• US Classifications

  • 455 - Telecommunications