1991114

Information

• Patent Grant
• 1991114

• References
• Source

• Patent Number

  1,991,114

• Date Filed

  Not available

• Date Issued

  Tuesday, February 12, 1935
  89 years ago

• CPC

  • F22B1/24 - Pressure-fired steam boilers

• US Classifications

  • 122 - Liquid heaters and vaporizers
  • 060 - Power plants
  • 236 - Automatic temperature and humidity regulation