3811352

Information

• Patent Grant
• 3811352

• References
• Source

• Patent Number

  3,811,352

• Date Filed

  Not available

• Date Issued

  Tuesday, May 21, 1974
  50 years ago

• CPC

  • B21D28/28 - in tubes or other hollow bodies
  • B21D28/10 - Incompletely punching in such a manner that the parts are still coherent with the work
  • B21D28/285 - punching outwards
  • B23D21/14 - cutting inside the tube
  • B26D3/00 - Cutting work characterised by the nature of the cut made Apparatus therefor
  • F01N1/10 - in combination with sound-absorbing materials
  • Y10T83/0596 - Cutting wall of hollow work
  • Y10T83/384 - By tool inside hollow work
  • Y10T83/392 - One tool [either internal or external] having compound motion

• US Classifications

  • 083 - Cutting