3281821

Information

• Patent Grant
• 3281821

• References
• Source

• Patent Number

  3,281,821

• Date Filed

  Not available

• Date Issued

  Tuesday, October 25, 1966
  58 years ago

• CPC

  • H04L12/1809 - for auctioneering devices

• US Classifications

  • 340 - Communications: electrical