3523771

Information

• Patent Grant
• 3523771

• References
• Source

• Patent Number

  3,523,771

• Date Filed

  Not available

• Date Issued

  Tuesday, August 11, 1970
  54 years ago

• CPC

  • G01N31/22 - using chemical indicators
  • G01M3/12 - by observing elastic covers or coatings
  • F16L2101/30 - Inspecting, measuring or testing

• US Classifications

  • 436 - Chemistry: analytical and immunological testing
  • 048 - Gas: heating and illuminating
  • 073 - Measuring and testing
  • 116 - Signals and indicators