1637030

Information

• Patent Grant
• 1637030

• References
• Source

• Patent Number

  1,637,030

• Date Filed

  Not available

• Date Issued

  Tuesday, July 26, 1927
  97 years ago

• CPC

  • B21G1/006 - Special treatments of pins or needles
  • B21G1/12 - Securing, cleaning-off burrs, reconditioning polishing, grinding

• US Classifications

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