2353990

Information

• Patent Grant
• 2353990

• References
• Source

• Patent Number

  2,353,990

• Date Filed

  Not available

• Date Issued

  Tuesday, July 18, 1944
  80 years ago

• CPC

  • E01B27/18 - by introducing additional fresh material under the sleepers

• US Classifications

  • 104 - Railways
  • 222 - Dispensing