3054994

Information

• Patent Grant
• 3054994

• References
• Source

• Patent Number

  3,054,994

• Date Filed

  Not available

• Date Issued

  Tuesday, September 18, 1962
  62 years ago

• CPC

  • G08B7/02 - using mechanical transmission
  • H01R13/6691 - with built-in signalling means
  • H04M19/04 - ringing-current generated at substation
  • H01R31/02 - Intermediate parts for distributing energy to two or more circuits in parallel
  • Y10T307/74 - Switching systems

• US Classifications

  • 340 - Communications: electrical
  • 174 - Electricity: conductors and insulators
  • 307 - Electrical transmission or interconnection systems
  • 439 - Electrical connectors