3676669

Information

• Patent Grant
• 3676669

• References
• Source

• Patent Number

  3,676,669

• Date Filed

  Not available

• Date Issued

  Tuesday, July 11, 1972
  52 years ago

• CPC

  • B61L25/06 - Indicating or recording the setting of track apparatus
  • B61L3/225 - using separate conductors along the route

• US Classifications

  • 246 - Railway switches and signals