3375089

Information

• Patent Grant
• 3375089

• References
• Source

• Patent Number

  3,375,089

• Date Filed

  Not available

• Date Issued

  Tuesday, March 26, 1968
  56 years ago

• CPC

  • F22B37/106 - Studding of tubes
  • B21C37/22 - Making finned or ribbed tubes by fixing strip or like material to tubes
  • F28F1/124 - and being formed of pins
  • Y10T428/12403 - Longitudinally smooth and symmetrical
  • Y10T428/12965 - Both containing 0.01-1.7% carbon [i.e., steel]
  • Y10T428/12979 - Containing more than 10% nonferrous elements [e.g., high alloy, stainless]

• US Classifications

  • 138 - Pipes and tubular conduits
  • 428 - Stock material or miscellaneous articles