2254189

Information

• Patent Grant
• 2254189

• References
• Source

• Patent Number

  2,254,189

• Date Filed

  Not available

• Date Issued

  Tuesday, August 26, 1941
  83 years ago

• CPC

  • F28F9/0239 - floating header boxes
  • Y10S165/432 - including a tube sheet
  • Y10T292/218 - Screw against closure
  • Y10T307/735 - Attainment of voltage, frequency or phase relationship

• US Classifications

  • 165 - Heat exchange
  • 292 - Closure fasteners
  • 307 - Electrical transmission or interconnection systems