3677384

Information

• Patent Grant
• 3677384

• References
• Source

• Patent Number

  3,677,384

• Date Filed

  Not available

• Date Issued

  Tuesday, July 18, 1972
  52 years ago

• CPC

  • B41J7/56 - Summation devices for mechanical movements

• US Classifications

  • 400 - Typewriting machines
  • 178 - Telegraphy