3750404

Information

• Patent Grant
• 3750404

• References
• Source

• Patent Number

  3,750,404

• Date Filed

  Not available

• Date Issued

  Tuesday, August 7, 1973
  51 years ago

• CPC

  • E21B33/0355 - Control systems
  • Y10S60/903 - Closures operators

• US Classifications

  • 060 - Power plants