3004149

Information

• Patent Grant
• 3004149

• References
• Source

• Patent Number

  3,004,149

• Date Filed

  Not available

• Date Issued

  Tuesday, October 10, 1961
  63 years ago

• CPC

  • B61L13/005 - optically actuated
  • B61L23/12 - partly operated by train

• US Classifications

  • 246 - Railway switches and signals