3918890

Information

• Patent Grant
• 3918890

• References
• Source

• Patent Number

  3,918,890

• Date Filed

  Not available

• Date Issued

  Tuesday, November 11, 1975
  49 years ago

• CPC

  • F16K31/54 - with pinion and rack
  • C21B9/12 - Hot-blast valves or slides for blast furnaces
  • Y10T137/5544 - Reversing valves - regenerative furnace type

• US Classifications

  • 432 - Heating
  • 137 - Fluid handling