2800023

Information

• Patent Grant
• 2800023

• References
• Source

• Patent Number

  2,800,023

• Date Filed

  Not available

• Date Issued

  Tuesday, July 23, 1957
  67 years ago

• CPC

  • G01J5/60 - using determination of colour temperature Pyrometry using two wavelengths filtering; using selective, monochromatic or bandpass filtering; using spectral scanning
  • Y10S246/01 - Radiant energy devices

• US Classifications

  • 374 - Thermal measuring and testing
  • 246 - Railway switches and signals