1640876

Information

• Patent Grant
• 1640876

• References
• Source

• Patent Number

  1,640,876

• Date Filed

  Not available

• Date Issued

  Tuesday, August 30, 1927
  97 years ago

• CPC

  • B22D19/0018 - cylinders with fins

• US Classifications

  • 165 - Heat exchange
  • 164 - Metal founding