1853934

Information

• Patent Grant
• 1853934

• References
• Source

• Patent Number

  1,853,934

• Date Filed

  Not available

• Date Issued

  Tuesday, April 12, 1932
  92 years ago

• CPC

  • B61L29/026 - Preventing access by means of obstacles raising across the route
  • E01F13/048 - with obstructing members moving in a translatory motion

• US Classifications

  • 246 - Railway switches and signals
  • 049 - Movable or removable closures