2494256

Information

• Patent Grant
• 2494256

• References
• Source

• Patent Number

  2,494,256

• Date Filed

  Not available

• Date Issued

  Tuesday, January 10, 1950
  75 years ago

• CPC

  • C10G61/06 - the refining step being a sorption process
  • E03B3/10 - by means of pit wells
  • E21B43/117 - Shaped charge perforators
  • F42B3/08 - with cavities in the charge

• US Classifications

  • 175 - Boring or penetrating the earth
  • 089 - Ordnance
  • 102 - Ammunition and explosives