1331227

Information

• Patent Grant
• 1331227

• References
• Source

• Patent Number

  1,331,227

• Date Filed

  Not available

• Date Issued

  Tuesday, February 17, 1920
  105 years ago

• CPC

  • B23G1/225 - automatically controlled

• US Classifications

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