1688220

Information

• Patent Grant
• 1688220

• References
• Source

• Patent Number

  1,688,220

• Date Filed

  Not available

• Date Issued

  Tuesday, October 16, 1928
  96 years ago

• CPC

  • F27D1/00 - Casings Linings Walls Roofs
  • F27B14/065 - Channel type
  • F27B14/10 - Crucibles
  • F27B2014/0843 - Lining or casing
  • F27B2014/104 - Crucible linings

• US Classifications

  • 373 - Industrial electric heating furnaces