1969810

Information

• Patent Grant
• 1969810

• References
• Source

• Patent Number

  1,969,810

• Date Filed

  Not available

• Date Issued

  Tuesday, August 14, 1934
  90 years ago

• CPC

  • E21D11/083 - Methods or devices for joining adjacent concrete segments
  • E21D11/04 - Lining with building materials

• US Classifications

  • 405 - Hydraulic and earth engineering