3213414

Information

• Patent Grant
• 3213414

• References
• Source

• Patent Number

  3,213,414

• Date Filed

  Not available

• Date Issued

  Tuesday, October 19, 1965
  60 years ago

• CPC

  • E21B47/0005 - control of cementation quality or level
  • G01V1/188 - with pressure compensating means
  • G01V1/52 - Structural details
  • G01V1/523 - Damping devices

• US Classifications

  • 181 - Acoustics