2725549

Information

• Patent Grant
• 2725549

• References
• Source

• Patent Number

  2,725,549

• Date Filed

  Not available

• Date Issued

  Tuesday, November 29, 1955
  69 years ago

• CPC

  • H04L12/1809 - for auctioneering devices

• US Classifications

  • 340 - Communications: electrical
  • 323 - Electricity: power supply or regulation systems