3740993

Information

• Patent Grant
• 3740993

• References
• Source

• Patent Number

  3,740,993

• Date Filed

  Not available

• Date Issued

  Tuesday, June 26, 1973
  51 years ago

• CPC

  • B21K21/10 - cone-shaped or bell-shaped articles

• US Classifications

  • 072 - Metal deforming