1779138

Information

• Patent Grant
• 1779138

• References
• Source

• Patent Number

  1,779,138

• Date Filed

  Not available

• Date Issued

  Tuesday, October 21, 1930
  94 years ago

• CPC

  • E01B3/18 - Composite sleepers

• US Classifications

  • 238 - Railways: surface track
  • 235 - Registers