2635696

Information

• Patent Grant
• 2635696

• References
• Source

• Patent Number

  2,635,696

• Date Filed

  Not available

• Date Issued

  Tuesday, April 21, 1953
  72 years ago

• CPC

  • E03B3/10 - by means of pit wells

• US Classifications

  • 166 - Wells
  • 405 - Hydraulic and earth engineering