3155174

Information

• Patent Grant
• 3155174

• References
• Source

• Patent Number

  3,155,174

• Date Filed

  Not available

• Date Issued

  Tuesday, November 3, 1964
  60 years ago

• CPC

  • E21B7/1245 - using explosive means
  • E21B49/04 - using explosives in boreholes using projectiles penetrating the wall

• US Classifications

  • 175 - Boring or penetrating the earth
  • 089 - Ordnance
  • 114 - Ships
  • 335 - Electricity: magnetically operated switches, magnets, and electromagnets