2177837

Information

• Patent Grant
• 2177837

• References
• Source

• Patent Number

  2,177,837

• Date Filed

  Not available

• Date Issued

  Tuesday, October 31, 1939
  85 years ago

• CPC

  • A45D6/20 - Temperature-regulating devices for hair curlers
  • G01K7/08 - the object to be measured forming one of the thermo-electric materials

• US Classifications

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