1951394

Information

• Patent Grant
• 1951394

• References
• Source

• Patent Number

  1,951,394

• Date Filed

  Not available

• Date Issued

  Tuesday, March 20, 1934
  90 years ago

• CPC

  • H02G3/0468 - Corrugated
  • Y10S29/038 - Spot welding with other step
  • Y10T29/49384 - Internally finned

• US Classifications

  • 138 - Pipes and tubular conduits
  • 029 - Metal working
  • 165 - Heat exchange