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GB408300A - Improvements in or relating to two-way telephone and like electrical systems - Google Patents

Improvements in or relating to two-way telephone and like electrical systems

Info

Publication number
GB408300A
GB408300A GB24631/32A GB2463132A GB408300A GB 408300 A GB408300 A GB 408300A GB 24631/32 A GB24631/32 A GB 24631/32A GB 2463132 A GB2463132 A GB 2463132A GB 408300 A GB408300 A GB 408300A
Authority
GB
United Kingdom
Prior art keywords
path
over
controlled
coil set
signals
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB24631/32A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Marconis Wireless Telegraph Co Ltd
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co Ltd
Marconi Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to NL37480D priority Critical patent/NL37480C/xx
Priority to DENDAT623827D priority patent/DE623827C/de
Application filed by Marconis Wireless Telegraph Co Ltd, Marconi Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Priority to GB6796/34A priority patent/GB408329A/en
Priority to GB24631/32A priority patent/GB408300A/en
Priority to FR761604D priority patent/FR761604A/fr
Priority to US690320A priority patent/US1992833A/en
Publication of GB408300A publication Critical patent/GB408300A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Noise Elimination (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Near-Field Transmission Systems (AREA)
GB24631/32A 1932-09-03 1932-09-03 Improvements in or relating to two-way telephone and like electrical systems Expired GB408300A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
NL37480D NL37480C (ro) 1932-09-03
DENDAT623827D DE623827C (ro) 1932-09-03
GB6796/34A GB408329A (en) 1932-09-03 1932-09-03 Improvements in or relating to two-way telephone and like electrical systems
GB24631/32A GB408300A (en) 1932-09-03 1932-09-03 Improvements in or relating to two-way telephone and like electrical systems
FR761604D FR761604A (fr) 1932-09-03 1933-09-02 Perfectionnements aux systèmes téléphoniques à double voie et analogues
US690320A US1992833A (en) 1932-09-03 1933-09-21 Two-way telephone and like electrical system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB24631/32A GB408300A (en) 1932-09-03 1932-09-03 Improvements in or relating to two-way telephone and like electrical systems

Publications (1)

Publication Number Publication Date
GB408300A true GB408300A (en) 1934-04-03

Family

ID=10214744

Family Applications (2)

Application Number Title Priority Date Filing Date
GB24631/32A Expired GB408300A (en) 1932-09-03 1932-09-03 Improvements in or relating to two-way telephone and like electrical systems
GB6796/34A Expired GB408329A (en) 1932-09-03 1932-09-03 Improvements in or relating to two-way telephone and like electrical systems

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB6796/34A Expired GB408329A (en) 1932-09-03 1932-09-03 Improvements in or relating to two-way telephone and like electrical systems

Country Status (5)

Country Link
US (1) US1992833A (ro)
DE (1) DE623827C (ro)
FR (1) FR761604A (ro)
GB (2) GB408300A (ro)
NL (1) NL37480C (ro)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2511948A (en) * 1950-06-20 Hybrid circuit
NL80719C (ro) * 1949-10-11
DE1062748B (de) * 1956-02-29 1959-08-06 Siemens Ag Einrichtung zur Vermeidung unerwuenschter Rueckkopplungen bei UEbertragungssystemen

Also Published As

Publication number Publication date
DE623827C (ro)
NL37480C (ro)
FR761604A (fr) 1934-03-23
GB408329A (en) 1934-04-03
US1992833A (en) 1935-02-26

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