2551500

Information

• Patent Grant
• 2551500

• References
• Source

• Patent Number

  2,551,500

• Date Filed

  Not available

• Date Issued

  Tuesday, May 1, 1951
  73 years ago

• CPC

  • E01B3/32 - with armouring or reinforcement
  • E01B3/42 - combined with inserts of wood or other material

• US Classifications

  • 238 - Railways: surface track