Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04Q—SELECTING
  • H04Q1/00—Details of selecting apparatus or arrangements
  • H04Q1/18—Electrical details
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04Q—SELECTING
  • H04Q3/00—Selecting arrangements
  • H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite
  • H04Q3/62—Arrangements providing connection between main exchange and sub-exchange or satellite for connecting to private branch exchanges
  • H04Q3/625—Arrangements in the private branch exchange

Landscapes

• Engineering & Computer Science (AREA)
• Computer Networks & Wireless Communication (AREA)
• Physics & Mathematics (AREA)
• Astronomy & Astrophysics (AREA)
• General Physics & Mathematics (AREA)
• Interface Circuits In Exchanges (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=19802353

Family Applications (1)

Country Status (4)

• 0
  • BE BE493791D patent/BE493791A/xx unknown
  • NL NL656502227A patent/NL144773B/xx unknown
  • NL NL72168D patent/NL72168C/xx active
• 1950
  • 1950-02-03 GB GB2829/50A patent/GB678319A/en not_active Expired
  • 1950-02-09 FR FR1013615D patent/FR1013615A/fr not_active Expired

Also Published As

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