1804777

Information

• Patent Grant
• 1804777

• References
• Source

• Patent Number

  1,804,777

• Date Filed

  Not available

• Date Issued

  Tuesday, May 12, 1931
  93 years ago

• CPC

  • F22B33/04 - of boilers of furnace-tube type with boilers of water-tube type

• US Classifications

  • 122 - Liquid heaters and vaporizers
  • 126 - Stoves and furnaces