1788446

Information

• Patent Grant
• 1788446

• References
• Source

• Patent Number

  1,788,446

• Date Filed

  Not available

• Date Issued

  Tuesday, January 13, 1931
  94 years ago

• CPC

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

• US Classifications

  • 238 - Railways: surface track