3684391

Information

• Patent Grant
• 3684391

• References
• Source

• Patent Number

  3,684,391

• Date Filed

  Not available

• Date Issued

  Tuesday, August 15, 1972
  53 years ago

• CPC

  • B26F1/16 - Perforating by tool or tools of the drill type
  • Y10T408/38 - Plural, simultaneously operational tools
  • Y10T408/3839 - with presser-foot

• US Classifications

  • 408 - Cutting by use of rotating axially moving tool