3021747

Information

• Patent Grant
• 3021747

• References
• Source

• Patent Number

  3,021,747

• Date Filed

  Not available

• Date Issued

  Tuesday, February 20, 1962
  62 years ago

• CPC

  • E21D21/02 - having means for indicating tension
  • F16B31/028 - with a load-indicating washer or washer assembly
  • G01L5/243 - using washers
  • Y10S116/34 - Tension indicating
  • Y10S116/35 - Electroluminescent dials

• US Classifications

  • 411 - Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
  • 073 - Measuring and testing
  • 116 - Signals and indicators