3521597

Information

• Patent Grant
• 3521597

• References
• Source

• Patent Number

  3,521,597

• Date Filed

  Not available

• Date Issued

  Tuesday, July 21, 1970
  54 years ago

• CPC

  • G01D13/24 - for indicating a maximum or minimum

• US Classifications

  • 340 - Communications: electrical
  • 033 - Geometrical instruments
  • 073 - Measuring and testing
  • 116 - Signals and indicators