Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04J—MULTIPLEX COMMUNICATION
  • H04J1/00—Frequency-division multiplex systems
  • H04J1/02—Details
  • H04J1/14—Arrangements providing for calling or supervisory signals

Landscapes

• Engineering & Computer Science (AREA)
• Computer Networks & Wireless Communication (AREA)
• Signal Processing (AREA)
• Mobile Radio Communication Systems (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=19786941

Family Applications (1)

Country Status (3)

• 0
  • BE BE426131D patent/BE426131A/xx unknown
• 1938
  • 1938-01-31 GB GB2979/38A patent/GB514362A/en not_active Expired
  • 1938-02-01 FR FR833013D patent/FR833013A/fr not_active Expired

Also Published As

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