989668

Information

• Patent Grant
• 989668

• References
• Source

• Patent Number

  989,668

• Date Filed

  Not available

• Date Issued

  Tuesday, April 18, 1911
  113 years ago

• CPC

  • B21D28/265 - with relative movement of sheet and tools enabling the punching of holes in predetermined locations of the sheet
  • Y10S83/905 - Buttonhole making
  • Y10T83/2135 - Moving stripper timed with tool stroke

• US Classifications

  • 083 - Cutting