3320809

Information

• Patent Grant
• 3320809

• References
• Source

• Patent Number

  3,320,809

• Date Filed

  Not available

• Date Issued

  Tuesday, May 23, 1967
  57 years ago

• CPC

  • G01L5/18 - for measuring ratios of force
  • G01L1/083 - using hydraulic or pneumatic counterbalancing forces
  • G01L11/004 - by the use of counterbalancing forces
  • G01L13/023 - using bellows

• US Classifications

  • 073 - Measuring and testing
  • 200 - Electricity: circuit makers and breakers