3508978

Information

• Patent Grant
• 3508978

• References
• Source

• Patent Number

  3,508,978

• Date Filed

  Not available

• Date Issued

  Tuesday, April 28, 1970
  54 years ago

• CPC

  • B21B1/09 - L-sections
  • A63C5/048 - of the edges
  • A63C11/06 - Edge-sharpeners
  • B21B1/0805 - Flat bars
  • C21D2221/02 - Edge parts

• US Classifications

  • 148 - Metal treatment