505420

Information

• Patent Grant
• 505420

• References
• Source

• Patent Number

  505,420

• Date Filed

  Not available

• Date Issued

  Tuesday, September 19, 1893
  131 years ago

• CPC

  • B61L21/04 - Electrical locking and release of the route Electrical repeat locks
  • G01S7/003 - Transmission of data between radar, sonar or lidar systems and remote stations

• US Classifications

  • 246 - Railway switches and signals