1457773

Information

• Patent Grant
• 1457773

• References
• Source

• Patent Number

  1,457,773

• Date Filed

  Not available

• Date Issued

  Tuesday, June 5, 1923
  101 years ago

• CPC

  • F24H1/167 - using solid fuel
  • Y10T29/49362 - Tube wound about tube

• US Classifications

  • 122 - Liquid heaters and vaporizers
  • 029 - Metal working