1500829

Information

• Patent Grant
• 1500829

• References
• Source

• Patent Number

  1,500,829

• Date Filed

  Not available

• Date Issued

  Tuesday, July 8, 1924
  100 years ago

• CPC

  • B21D28/285 - punching outwards
  • B21D28/28 - in tubes or other hollow bodies
  • Y10T29/496 - Multiperforated metal article making
  • Y10T29/49602 - Coil wound wall screen

• US Classifications

  • 166 - Wells
  • 029 - Metal working