3438238

Information

• Patent Grant
• 3438238

• References
• Source

• Patent Number

  3,438,238

• Date Filed

  Not available

• Date Issued

  Tuesday, April 15, 1969
  55 years ago

• CPC

  • B21D9/14 - Wrinkle-bending
  • B21C37/28 - Making tube fittings for connecting pipes

• US Classifications

  • 072 - Metal deforming