1766989

Information

• Patent Grant
• 1766989

• References
• Source

• Patent Number

  1,766,989

• Date Filed

  Not available

• Date Issued

  Tuesday, June 24, 1930
  94 years ago

• CPC

  • F22B21/005 - involving a central vertical drum, header or downcomer

• US Classifications

  • 122 - Liquid heaters and vaporizers