1861961

Information

• Patent Grant
• 1861961

• References
• Source

• Patent Number

  1,861,961

• Date Filed

  Not available

• Date Issued

  Tuesday, June 7, 1932
  92 years ago

• CPC

  • E01B3/32 - with armouring or reinforcement

• US Classifications

  • 238 - Railways: surface track