71903

Information

• Patent Grant
• 71903

• References
• Source

• Patent Number

  71,903

• Date Filed

  Not available

• Date Issued

  Tuesday, December 10, 1867
  157 years ago

• CPC

  • F22B21/088 - involving an upper drum and a lower drum and two lateral drums

• US Classifications

  • 122 - Liquid heaters and vaporizers