3851821

Information

• Patent Grant
• 3851821

• References
• Source

• Patent Number

  3,851,821

• Date Filed

  Not available

• Date Issued

  Tuesday, December 3, 1974
  49 years ago

• CPC

  • E01B11/24 - with oblique or overlapping rail ends

• US Classifications

  • 238 - Railways: surface track