2851535

Information

• Patent Grant
• 2851535

• References
• Source

• Patent Number

  2,851,535

• Date Filed

  Not available

• Date Issued

  Tuesday, September 9, 1958
  66 years ago

• CPC

  • H04Q3/0008 - using relay selectors in the switching stages

• US Classifications

  • 379 - Telephonic communications