2154577

Information

• Patent Grant
• 2154577

• References
• Source

• Patent Number

  2,154,577

• Date Filed

  Not available

• Date Issued

  Tuesday, April 18, 1939
  85 years ago

• CPC

  • B41J5/107 - for special purposes
  • B41J5/10 - Arrangements of keyboards

• US Classifications

  • 400 - Typewriting machines