3813909

Information

• Patent Grant
• 3813909

• References
• Source

• Patent Number

  3,813,909

• Date Filed

  Not available

• Date Issued

  Tuesday, June 4, 1974
  51 years ago

• CPC

  • B21K1/305 - helical
  • B21C25/10 - Making tools by operations not covered by a single other subclass
  • B21K1/30 - with gear-teeth
  • B21K5/20 - Making working faces of dies, either recessed or outstanding
  • Y10T29/49474 - Die-press shaping

• US Classifications

  • 072 - Metal deforming
  • 029 - Metal working