1901632

Information

• Patent Grant
• 1901632

• References
• Source

• Patent Number

  1,901,632

• Date Filed

  Not available

• Date Issued

  Tuesday, March 14, 1933
  91 years ago

• CPC

  • G01B9/02 - Interferometers for determining dimensional properties of, or relations between, measurement objects
  • Y10S33/04 - Interferometer

• US Classifications

  • 356 - Optics: measuring and testing
  • 033 - Geometrical instruments