1972571

Information

• Patent Grant
• 1972571

• References
• Source

• Patent Number

  1,972,571

• Date Filed

  Not available

• Date Issued

  Tuesday, September 4, 1934
  90 years ago

• CPC

  • F24D9/02 - Hot water and steam systems

• US Classifications

  • 237 - Heating systems
  • 060 - Power plants
  • 122 - Liquid heaters and vaporizers