2815811

Information

• Patent Grant
• 2815811

• References
• Source

• Patent Number

  2,815,811

• Date Filed

  Not available

• Date Issued

  Tuesday, December 10, 1957
  67 years ago

• CPC

  • G06K21/06 - Apparatus or tools adapted for slotting or otherwise marking information-retrieval cards
  • Y10S83/917 - Notching
  • Y10T83/4491 - Interlock between tool actuating and work feed means
  • Y10T83/4569 - Manual
  • Y10T83/658 - With projections on work-carrier [e.g., pin wheel]
  • Y10T83/8735 - With means providing for plural steps in tool stroke

• US Classifications

  • 083 - Cutting
  • 101 - Printing