2220498

Information

• Patent Grant
• 2220498

• References
• Source

• Patent Number

  2,220,498

• Date Filed

  Not available

• Date Issued

  Tuesday, November 5, 1940
  84 years ago

• CPC

  • H04L17/06 - Contact operating means
  • H04L17/04 - with keyboard co-operating with code-bars

• US Classifications

  • 178 - Telegraphy