3528291

Information

• Patent Grant
• 3528291

• References
• Source

• Patent Number

  3,528,291

• Date Filed

  Not available

• Date Issued

  Tuesday, September 15, 1970
  54 years ago

• CPC

  • G01F23/2924 - for several discrete levels

• US Classifications

  • 073 - Measuring and testing
  • 116 - Signals and indicators