18839

Information

• Patent Grant
• 18839

• References
• Source

• Patent Number

  18,839

• Date Filed

  Not available

• Date Issued

  Tuesday, December 15, 1857
  167 years ago

• CPC

  • B60B33/08 - Ball castors
  • Y10T16/1887 - Antifrictionally mounted

• US Classifications

  • 016 - Miscellaneous hardware
  • 138 - Pipes and tubular conduits