3762081

Information

• Patent Grant
• 3762081

• References
• Source

• Patent Number

  3,762,081

• Date Filed

  Not available

• Date Issued

  Tuesday, October 2, 1973
  51 years ago

• CPC

  • G06K19/10 - at least one kind of marking being used for authentication
  • B42D25/00 - Information-bearing cards or sheet-like structures characterised by identification or security features Manufacture thereof
  • B42D25/346 - Perforations
  • B42D2033/02 - Single layer structure
  • B42D2033/22 - Perforated or incised material
  • B42D2035/08 - Alphanumerical data
  • B42D2035/34 - Markings visible under particular conditions or containing coded information

• US Classifications

  • 283 - Printed matter