2272245

Information

• Patent Grant
• 2272245

• References
• Source

• Patent Number

  2,272,245

• Date Filed

  Not available

• Date Issued

  Tuesday, February 10, 1942
  83 years ago

• CPC

  • G09B23/16 - for science of heat

• US Classifications

  • 434 - Education and demonstration
  • 040 - Card, picture, or sign exhibiting
  • 374 - Thermal measuring and testing