1640874

Information

• Patent Grant
• 1640874

• References
• Source

• Patent Number

  1,640,874

• Date Filed

  Not available

• Date Issued

  Tuesday, August 30, 1927
  97 years ago

• CPC

  • F28D1/05358 - Assemblies of conduits connected side by side or with individual headers
  • F28F9/264 - by sleeves, nipples

• US Classifications

  • 165 - Heat exchange