2538580

Information

• Patent Grant
• 2538580

• References
• Source

• Patent Number

  2,538,580

• Date Filed

  Not available

• Date Issued

  Tuesday, January 16, 1951
  74 years ago

• CPC

  • B26F1/28 - by electrical discharges
  • A43D8/18 - by punching or perforating
  • C14B5/00 - Clicking, perforating, or cutting leather
  • C14B2700/116 - Perforating machines

• US Classifications

  • 219 - Electric heating
  • 012 - Boot and shoe making
  • 066 - Textiles: knitting