1999173

Information

• Patent Grant
• 1999173

• References
• Source

• Patent Number

  1,999,173

• Date Filed

  Not available

• Date Issued

  Tuesday, April 30, 1935
  89 years ago

• CPC

  • G01K1/065 - of liquid column thermometers

• US Classifications

  • 374 - Thermal measuring and testing
  • 125 - Stone working