2501685

Information

• Patent Grant
• 2501685

• References
• Source

• Patent Number

  2,501,685

• Date Filed

  Not available

• Date Issued

  Tuesday, March 28, 1950
  75 years ago

• CPC

  • B21D28/30 - in annular parts
  • Y10T83/2209 - Guide
  • Y10T83/7673 - Spaced edges
  • Y10T83/8691 - Unicyclic
  • Y10T83/8785 - Through return [noncutting] stroke
  • Y10T83/8831 - Plural distinct cutting edges on same support
  • Y10T83/9425 - Tool pair
  • Y10T83/943 - Multiple punchings

• US Classifications

  • 083 - Cutting
  • 269 - Work holders