2817010

Information

• Patent Grant
• 2817010

• References
• Source

• Patent Number

  2,817,010

• Date Filed

  Not available

• Date Issued

  Tuesday, December 17, 1957
  67 years ago

• CPC

  • B61L23/12 - partly operated by train
  • B61L1/185 - Use of direct current

• US Classifications

  • 246 - Railway switches and signals