1489401

Information

• Patent Grant
• 1489401

• References
• Source

• Patent Number

  1,489,401

• Date Filed

  Not available

• Date Issued

  Tuesday, April 8, 1924
  100 years ago

• CPC

  • G01K3/12 - based upon expansion or contraction of materials

• US Classifications

  • 337 - Electricity: electrothermally or thermally actuated switches
  • 374 - Thermal measuring and testing