1721878

Information

• Patent Grant
• 1721878

• References
• Source

• Patent Number

  1,721,878

• Date Filed

  Not available

• Date Issued

  Tuesday, July 23, 1929
  95 years ago

• CPC

  • B22D19/0018 - cylinders with fins
  • B22D19/0081 - pretreatment of the insert
  • Y10T29/49378 - Finned tube

• US Classifications

  • 164 - Metal founding
  • 029 - Metal working
  • 126 - Stoves and furnaces
  • 165 - Heat exchange