3851478

Information

• Patent Grant
• 3851478

• References
• Source

• Patent Number

  3,851,478

• Date Filed

  Not available

• Date Issued

  Tuesday, December 3, 1974
  50 years ago

• CPC

  • E02D1/027 - by investigating properties relating to fluids in the soil
  • E21F5/08 - Rock dusting of mines Depositing other protective substances

• US Classifications

  • 405 - Hydraulic and earth engineering
  • 169 - Fire extinguishers