2021820

Information

• Patent Grant
• 2021820

• References
• Source

• Patent Number

  2,021,820

• Date Filed

  Not available

• Date Issued

  Tuesday, November 19, 1935
  89 years ago

• CPC

  • C04B41/52 - Multiple coating or impregnating multiple coating or impregnating with the same composition or with compositions only differing in the concentration of the constituents, is classified as single coating or impregnation
  • C04B41/4505 - characterised by the method of application
  • C23D5/06 - producing designs or letters
  • Y10T428/24893 - including particulate material
  • Y10T428/24926 - including ceramic, glass, porcelain or quartz layer

• US Classifications

  • 428 - Stock material or miscellaneous articles
  • 427 - Coating processes