3534904

Information

• Patent Grant
• 3534904

• References
• Source

• Patent Number

  3,534,904

• Date Filed

  Not available

• Date Issued

  Tuesday, October 20, 1970
  54 years ago

• CPC

  • H03M11/00 - Coding in connection with keyboards or like devices
  • G06F3/0238 - Programmable keyboards
  • G06K1/06 - Manually-controlled device
  • G06K17/0003 - Automatic card files incorporating selecting, conveying and possibly reading and/or writing operations

• US Classifications

  • 234 - Selective cutting