1729259

Information

• Patent Grant
• 1729259

• References
• Source

• Patent Number

  1,729,259

• Date Filed

  Not available

• Date Issued

  Tuesday, September 24, 1929
  95 years ago

• CPC

  • F22D1/04 - the tubes having plain outer surfaces

• US Classifications

  • 122 - Liquid heaters and vaporizers