3828628

Information

• Patent Grant
• 3828628

• References
• Source

• Patent Number

  3,828,628

• Date Filed

  Not available

• Date Issued

  Tuesday, August 13, 1974
  50 years ago

• CPC

  • B21C25/10 - Making tools by operations not covered by a single other subclass
  • B21C23/10 - Making finned tubes
  • B21K1/30 - with gear-teeth
  • B21K1/305 - helical
  • B21K5/20 - Making working faces of dies, either recessed or outstanding

• US Classifications

  • 076 - Metal tools and implements, making