2187900

Information

• Patent Grant
• 2187900

• References
• Source

• Patent Number

  2,187,900

• Date Filed

  Not available

• Date Issued

  Tuesday, January 23, 1940
  85 years ago

• CPC

  • B41J15/20 - for webs superimposed during printing

• US Classifications

  • 400 - Typewriting machines