3691840

Information

• Patent Grant
• 3691840

• References
• Source

• Patent Number

  3,691,840

• Date Filed

  Not available

• Date Issued

  Tuesday, September 19, 1972
  52 years ago

• CPC

  • G01K13/022 - Suction thermometers

• US Classifications

  • 136 - Batteries: thermoelectric and photoelectric
  • 374 - Thermal measuring and testing