2220533

Information

• Patent Grant
• 2220533

• References
• Source

• Patent Number

  2,220,533

• Date Filed

  Not available

• Date Issued

  Tuesday, November 5, 1940
  84 years ago

• CPC

  • E01B3/32 - with armouring or reinforcement
  • E01B9/46 - by clamps
  • Y10T292/1094 - Screw

• US Classifications

  • 238 - Railways: surface track
  • 005 - Beds
  • 292 - Closure fasteners