3920979

Information

• Patent Grant
• 3920979

• References
• Source

• Patent Number

  3,920,979

• Date Filed

  Not available

• Date Issued

  Tuesday, November 18, 1975
  49 years ago

• CPC

  • B41J3/36 - for portability
  • G06C7/09 - Transfer of data from record carrier to computing mechanisms

• US Classifications

  • 708 - Electrical computers: arithmetic processing and calculating
  • 400 - Typewriting machines