671429

Information

• Patent Grant
• 671429

• References
• Source

• Patent Number

  671,429

• Date Filed

  Not available

• Date Issued

  Tuesday, April 9, 1901
  123 years ago

• CPC

  • E21B43/292 - using steerable or laterally extendable nozzles

• US Classifications

  • 175 - Boring or penetrating the earth
  • 037 - Excavating
  • 166 - Wells