1800453

Information

• Patent Grant
• 1800453

• References
• Source

• Patent Number

  1,800,453

• Date Filed

  Not available

• Date Issued

  Tuesday, April 14, 1931
  93 years ago

• CPC

  • E01B11/46 - General methods for making gapless tracks

• US Classifications

  • 238 - Railways: surface track