1812722

Information

• Patent Grant
• 1812722

• References
• Source

• Patent Number

  1,812,722

• Date Filed

  Not available

• Date Issued

  Tuesday, June 30, 1931
  94 years ago

• CPC

  • H01H37/16 - by varying the proportion of input heat received by the thermal element

• US Classifications

  • 236 - Automatic temperature and humidity regulation
  • 038 - Textiles: ironing or smoothing
  • 219 - Electric heating