3424248

Information

• Patent Grant
• 3424248

• References
• Source

• Patent Number

  3,424,248

• Date Filed

  Not available

• Date Issued

  Tuesday, January 28, 1969
  56 years ago

• CPC

  • E21F15/00 - Methods or devices for placing filling-up materials in underground workings
  • E21D1/16 - by petrification

• US Classifications

  • 166 - Wells