2783840

Information

• Patent Grant
• 2783840

• References
• Source

• Patent Number

  2,783,840

• Date Filed

  Not available

• Date Issued

  Tuesday, March 5, 1957
  67 years ago

• CPC

  • B21D28/285 - punching outwards
  • B21D28/28 - in tubes or other hollow bodies
  • Y10T83/384 - By tool inside hollow work
  • Y10T83/403 - With manually actuated means to position or facilitate positioning of work
  • Y10T83/461 - With abutment to position work being fed with respect to cutter
  • Y10T83/764 - Retractable
  • Y10T83/8786 - Oscillating tool
  • Y10T83/9425 - Tool pair

• US Classifications

  • 083 - Cutting