1444432

Information

• Patent Grant
• 1444432

• References
• Source

• Patent Number

  1,444,432

• Date Filed

  Not available

• Date Issued

  Tuesday, February 6, 1923
  101 years ago

• CPC

  • B23G1/06 - specially adapted for making conical screws

• US Classifications

  • 470 - Threaded, headed fastener, or washer making: process and apparatus