1830620

Information

• Patent Grant
• 1830620

• References
• Source

• Patent Number

  1,830,620

• Date Filed

  Not available

• Date Issued

  Tuesday, November 3, 1931
  93 years ago

• CPC

  • B41J31/02 - Ink ribbons characterised by the material from which they are woven

• US Classifications

  • 400 - Typewriting machines
  • 139 - Textiles: weaving