2150398

Information

• Patent Grant
• 2150398

• References
• Source

• Patent Number

  2,150,398

• Date Filed

  Not available

• Date Issued

  Tuesday, March 14, 1939
  85 years ago

• CPC

  • G01R13/38 - using the steady or oscillatory displacement of a light beam by an electromechanical measuring system

• US Classifications

  • 324 - Electricity: measuring and testing
  • 116 - Signals and indicators
  • 356 - Optics: measuring and testing