8420

Information

• Patent Grant
• 8420

• References
• Source

• Patent Number

  8,420

• Date Filed

  Not available

• Date Issued

  Tuesday, October 14, 1851
  173 years ago

• CPC

  • B41M5/10 - by using carbon paper or the like
  • Y10S165/176 - with means suspended beneath pipe surface to guide liquid droplets
  • Y10T428/24901 - including coloring matter

• US Classifications

  • 428 - Stock material or miscellaneous articles