1642359

Information

• Patent Grant
• 1642359

• References
• Source

• Patent Number

  1,642,359

• Date Filed

  Not available

• Date Issued

  Tuesday, September 13, 1927
  97 years ago

• CPC

  • F27D11/08 - Heating by electric discharge
  • C21B7/02 - Internal forms

• US Classifications

  • 373 - Industrial electric heating furnaces
  • 033 - Geometrical instruments