2089835

Information

• Patent Grant
• 2089835

• References
• Source

• Patent Number

  2,089,835

• Date Filed

  Not available

• Date Issued

  Tuesday, August 10, 1937
  87 years ago

• CPC

  • B61L13/005 - optically actuated

• US Classifications

  • 246 - Railway switches and signals
  • 250 - Radiant energy