3427844

Information

• Patent Grant
• 3427844

• References
• Source

• Patent Number

  3,427,844

• Date Filed

  Not available

• Date Issued

  Tuesday, February 18, 1969
  55 years ago

• CPC

  • B21J7/145 - the hammers being driven by a rotating annular driving member
  • B21J7/16 - in rotary arrangements
  • B21K5/04 - twisting-tools

• US Classifications

  • 072 - Metal deforming