2500587

Information

• Patent Grant
• 2500587

• References
• Source

• Patent Number

  2,500,587

• Date Filed

  Not available

• Date Issued

  Tuesday, March 14, 1950
  74 years ago

• CPC

  • B41J19/84 - in the form of a roller rotated for line spacing

• US Classifications

  • 400 - Typewriting machines