2689391

Information

• Patent Grant
• 2689391

• References
• Source

• Patent Number

  2,689,391

• Date Filed

  Not available

• Date Issued

  Tuesday, September 21, 1954
  70 years ago

• CPC

  • F27D1/1858 - Doors
  • F27B17/0041 - specially adapted for burning bricks or pottery
  • Y10T16/361 - Guide brackets
  • Y10T292/48 - Seals

• US Classifications

  • 432 - Heating
  • 016 - Miscellaneous hardware
  • 049 - Movable or removable closures
  • 052 - Static structures
  • 110 - Furnaces
  • 251 - Valves and valve actuation
  • 292 - Closure fasteners
  • 405 - Hydraulic and earth engineering