20546

Information

• Patent Grant
• 20546

• References
• Source

• Patent Number

  20,546

• Date Filed

  Not available

• Date Issued

  Tuesday, June 15, 1858
  167 years ago

• CPC

  • F22B33/12 - Self-contained steam boilers

• US Classifications

  • 122 - Liquid heaters and vaporizers
  • 162 - Paper making and fiber liberation