2180285

Information

• Patent Grant
• 2180285

• References
• Source

• Patent Number

  2,180,285

• Date Filed

  Not available

• Date Issued

  Tuesday, November 14, 1939
  85 years ago

• CPC

  • G01K1/065 - of liquid column thermometers

• US Classifications

  • 374 - Thermal measuring and testing
  • 359 - Optical: systems and elements
  • D10 - Measuring, testing, or signalling instruments