1478970

Information

• Patent Grant
• 1478970

• References
• Source

• Patent Number

  1,478,970

• Date Filed

  Not available

• Date Issued

  Tuesday, December 25, 1923
  101 years ago

• CPC

  • B61L29/222 - using conductor circuits with separate contacts or conductors

• US Classifications

  • 246 - Railway switches and signals