3714688

Information

• Patent Grant
• 3714688

• References
• Source

• Patent Number

  3,714,688

• Date Filed

  Not available

• Date Issued

  Tuesday, February 6, 1973
  52 years ago

• CPC

  • B21D39/034 - Joining superposed plates by piercing
  • B31F5/027 - by perforating
  • Y10T29/34 - Means for forming clench-tongue [eg, for tieband]

• US Classifications

  • 029 - Metal working
  • 072 - Metal deforming
  • D08 - Tools and hardware