3543905

Information

• Patent Grant
• 3543905

• References
• Source

• Patent Number

  3,543,905

• Date Filed

  Not available

• Date Issued

  Tuesday, December 1, 1970
  54 years ago

• CPC

  • B41J29/64 - by a function of the printer to lock the keyboard
  • B41J29/387 - Automatic cut-off devices

• US Classifications

  • 400 - Typewriting machines