1730614

Information

• Patent Grant
• 1730614

• References
• Source

• Patent Number

  1,730,614

• Date Filed

  Not available

• Date Issued

  Tuesday, October 8, 1929
  95 years ago

• CPC

  • H04L25/44 - using relay distributors

• US Classifications

  • 178 - Telegraphy
  • 370 - Multiplex communications