1643609

Information

• Patent Grant
• 1643609

• References
• Source

• Patent Number

  1,643,609

• Date Filed

  Not available

• Date Issued

  Tuesday, September 27, 1927
  97 years ago

• CPC

  • B21D51/00 - Making hollow objects
  • B21D51/02 - characterised by the structure of the objects
  • Y10T29/5116 - forging and bending, cutting or punching

• US Classifications

  • 029 - Metal working
  • 072 - Metal deforming