3253462

Information

• Patent Grant
• 3253462

• References
• Source

• Patent Number

  3,253,462

• Date Filed

  Not available

• Date Issued

  Tuesday, May 31, 1966
  58 years ago

• CPC

  • D03C17/00 - Card-punching apparatus

• US Classifications

  • 073 - Measuring and testing
  • 434 - Education and demonstration