2620435

Information

• Patent Grant
• 2620435

• References
• Source

• Patent Number

  2,620,435

• Date Filed

  Not available

• Date Issued

  Tuesday, December 2, 1952
  72 years ago

• CPC

  • B61L13/002 - actuated by the passage of the vehicle
  • Y10S246/01 - Radiant energy devices

• US Classifications

  • 246 - Railway switches and signals
  • 250 - Radiant energy
  • 378 - X-ray or gamma ray systems or devices