1425888

Information

• Patent Grant
• 1425888

• References
• Source

• Patent Number

  1,425,888

• Date Filed

  Not available

• Date Issued

  Tuesday, August 15, 1922
  102 years ago

• CPC

  • E03B3/10 - by means of pit wells

• US Classifications

  • 166 - Wells
  • 405 - Hydraulic and earth engineering