2090713

Information

• Patent Grant
• 2090713

• References
• Source

• Patent Number

  2,090,713

• Date Filed

  Not available

• Date Issued

  Tuesday, August 24, 1937
  87 years ago

• CPC

  • G01V7/12 - using pendulums

• US Classifications

  • 073 - Measuring and testing
  • 250 - Radiant energy
  • 318 - Electricity: motive power systems
  • 356 - Optics: measuring and testing