197894

Information

• Patent Grant
• 197894

• References
• Source

• Patent Number

  197,894

• Date Filed

  Not available

• Date Issued

  Tuesday, December 4, 1877
  147 years ago

• CPC

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

• US Classifications

  • 122 - Liquid heaters and vaporizers