2489640

Information

• Patent Grant
• 2489640

• References
• Source

• Patent Number

  2,489,640

• Date Filed

  Not available

• Date Issued

  Tuesday, November 29, 1949
  75 years ago

• CPC

  • A41H1/06 - in combination with marking
  • D06H1/003 - by passing a needle through the layers

• US Classifications

  • 101 - Printing
  • 118 - Coating apparatus
  • 427 - Coating processes