3538568

Information

• Patent Grant
• 3538568

• References
• Source

• Patent Number

  3,538,568

• Date Filed

  Not available

• Date Issued

  Tuesday, November 10, 1970
  54 years ago

• CPC

  • B21C37/207 - with helical guides
  • B21C37/153 - Making tubes with inner- and/or outer guides
  • Y10T409/502952 - For rifling

• US Classifications

  • 042 - Firearms
  • 072 - Metal deforming
  • 409 - Gear cutting, milling, or planing