1636610

Information

• Patent Grant
• 1636610

• References
• Source

• Patent Number

  1,636,610

• Date Filed

  Not available

• Date Issued

  Tuesday, July 19, 1927
  97 years ago

• CPC

  • E21D1/08 - while moving the lining downwards

• US Classifications

  • 166 - Wells
  • 138 - Pipes and tubular conduits
  • 405 - Hydraulic and earth engineering