3807578

Information

• Patent Grant
• 3807578

• References
• Source

• Patent Number

  3,807,578

• Date Filed

  Not available

• Date Issued

  Tuesday, April 30, 1974
  50 years ago

• CPC

  • B21D28/265 - with relative movement of sheet and tools enabling the punching of holes in predetermined locations of the sheet
  • Y10T83/6564 - By pattern or templet

• US Classifications

  • 269 - Work holders
  • 083 - Cutting