1687740

Information

• Patent Grant
• 1687740

• References
• Source

• Patent Number

  1,687,740

• Date Filed

  Not available

• Date Issued

  Tuesday, October 16, 1928
  96 years ago

• CPC

  • F22B1/1892 - Systems therefor not provided for in F22B1/1807 - F22B1/1861

• US Classifications

  • 122 - Liquid heaters and vaporizers