2154104

Information

• Patent Grant
• 2154104

• References
• Source

• Patent Number

  2,154,104

• Date Filed

  Not available

• Date Issued

  Tuesday, April 11, 1939
  85 years ago

• CPC

  • B21D53/085 - with fins places on zig-zag tubes or parallel tubes
  • B22C9/26 - for ribbed tubes for radiators

• US Classifications

  • 432 - Heating