1924603

Information

• Patent Grant
• 1924603

• References
• Source

• Patent Number

  1,924,603

• Date Filed

  Not available

• Date Issued

  Tuesday, August 29, 1933
  91 years ago

• CPC

  • B61L13/002 - actuated by the passage of the vehicle
  • Y10T307/944 - Power circuit controlled

• US Classifications

  • 361 - Electricity: electrical systems and devices
  • 246 - Railway switches and signals
  • 307 - Electrical transmission or interconnection systems
  • 340 - Communications: electrical