2964993

Information

• Patent Grant
• 2964993

• References
• Source

• Patent Number

  2,964,993

• Date Filed

  Not available

• Date Issued

  Tuesday, December 20, 1960
  64 years ago

• CPC

  • G01N21/431 - Dip refractometers
  • Y10S73/11 - Photoelectric cell

• US Classifications

  • 356 - Optics: measuring and testing
  • 073 - Measuring and testing
  • 250 - Radiant energy
  • 374 - Thermal measuring and testing