660837

Information

• Patent Grant
• 660837

• References
• Source

• Patent Number

  660,837

• Date Filed

  Not available

• Date Issued

  Tuesday, October 30, 1900
  124 years ago

• CPC

  • G21C11/085 - consisting exclusively of several metallic layers
  • Y10T292/485 - Sheet metal

• US Classifications

  • 292 - Closure fasteners