1969286

Information

• Patent Grant
• 1969286

• References
• Source

• Patent Number

  1,969,286

• Date Filed

  Not available

• Date Issued

  Tuesday, August 7, 1934
  90 years ago

• CPC

  • B61L29/026 - Preventing access by means of obstacles raising across the route
  • E01F13/046 - the obstructing members moving up in a translatory motion

• US Classifications

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