3656687

Information

• Patent Grant
• 3656687

• References
• Source

• Patent Number

  3,656,687

• Date Filed

  Not available

• Date Issued

  Tuesday, April 18, 1972
  52 years ago

• CPC

  • G06K1/04 - controlled by sensing markings on the record carrier being punched
  • G06K1/00 - Methods or arrangements for marking the record carrier in digital fashion
  • G06K1/06 - Manually-controlled device

• US Classifications

  • 234 - Selective cutting