Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04Q—SELECTING
  • H04Q1/00—Details of selecting apparatus or arrangements
  • H04Q1/02—Constructional details
  • H04Q1/04—Frames or mounting racks for selector switches; Accessories therefor, e.g. frame cover
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04H—BROADCAST COMMUNICATION
  • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
  • H04H20/65—Arrangements characterised by transmission systems for broadcast
  • H04H20/76—Wired systems
  • H04H20/77—Wired systems using carrier waves
  • H04H20/81—Wired systems using carrier waves combined with telephone network over which the broadcast is continuously available
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04M—TELEPHONIC COMMUNICATION
  • H04M7/00—Arrangements for interconnection between switching centres
  • H04M7/16—Arrangements for interconnection between switching centres in systems employing carrier frequencies

Landscapes

• Engineering & Computer Science (AREA)
• Signal Processing (AREA)
• Computer Networks & Wireless Communication (AREA)
• Exchange Systems With Centralized Control (AREA)
• Structure Of Telephone Exchanges (AREA)
• Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=6545191

Family Applications (1)

Country Status (5)

Families Citing this family (1)

• 1938
  • 1938-04-09 CH CH203270D patent/CH203270A/de unknown
  • 1938-04-12 GB GB11219/38A patent/GB497534A/en not_active Expired
  • 1938-04-12 FR FR836524D patent/FR836524A/fr not_active Expired
  • 1938-04-13 US US201715A patent/US2208917A/en not_active Expired - Lifetime
  • 1938-04-13 BE BE427559D patent/BE427559A/xx unknown

Also Published As

Similar Documents