3559445

Information

• Patent Grant
• 3559445

• References
• Source

• Patent Number

  3,559,445

• Date Filed

  Not available

• Date Issued

  Tuesday, February 2, 1971
  54 years ago

• CPC

  • B26F1/24 - Perforating by needles or pins
  • B21D28/34 - Perforating tools Die holders
  • B21D37/00 - Tools as parts of machines covered by this subclass
  • B21J5/066 - Flow drilling
  • B23B51/0426 - with centering devices
  • B26F1/02 - Perforating by punching
  • B23B2251/241 - Cross sections of the diameter of the drill
  • B23B2265/16 - Elliptical
  • B23B2265/32 - Polygonal
  • Y10T83/9314 - Pointed perforators

• US Classifications

  • 072 - Metal deforming
  • 083 - Cutting