3611780

Information

• Patent Grant
• 3611780

• References
• Source

• Patent Number

  3,611,780

• Date Filed

  Not available

• Date Issued

  Tuesday, October 12, 1971
  53 years ago

• CPC

  • B21B31/22 - mechanically
  • Y10T29/53848 - having screw operator

• US Classifications

  • 072 - Metal deforming
  • 029 - Metal working