GB530621A - Improvements in or relating to superimposed telegraph and telephone systems - Google Patents

Improvements in or relating to superimposed telegraph and telephone systems

Info

Publication number
GB530621A
GB530621A GB17287/39A GB1728739A GB530621A GB 530621 A GB530621 A GB 530621A GB 17287/39 A GB17287/39 A GB 17287/39A GB 1728739 A GB1728739 A GB 1728739A GB 530621 A GB530621 A GB 530621A
Authority
GB
United Kingdom
Prior art keywords
telegraph
superimposed
relating
telephone systems
telephony
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
GB17287/39A
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.)
JAN SOBOLA
LUCIEN ANGELIN GUSTAVE ALPHONS
Original Assignee
JAN SOBOLA
LUCIEN ANGELIN GUSTAVE ALPHONS
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
Application filed by JAN SOBOLA, LUCIEN ANGELIN GUSTAVE ALPHONS filed Critical JAN SOBOLA
Priority to GB17287/39A priority Critical patent/GB530621A/en
Publication of GB530621A publication Critical patent/GB530621A/en
Priority to FR947900D priority patent/FR947900A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M7/00—Arrangements for interconnection between switching centres
    • H04M7/08—Arrangements for interconnection between switching centres for phantom working
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
    • H04M11/062—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors using different frequency bands for speech and other data

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
GB17287/39A 1939-06-13 1939-06-13 Improvements in or relating to superimposed telegraph and telephone systems Expired GB530621A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB17287/39A GB530621A (en) 1939-06-13 1939-06-13 Improvements in or relating to superimposed telegraph and telephone systems
FR947900D FR947900A (fr) 1939-06-13 1947-06-13 Systèmes de transmission téléphoniques et télégraphiques combinés

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB17287/39A GB530621A (en) 1939-06-13 1939-06-13 Improvements in or relating to superimposed telegraph and telephone systems
GB215524X 1939-06-13

Publications (1)

Publication Number Publication Date
GB530621A true GB530621A (en) 1940-12-17

Family

ID=10164814

Family Applications (2)

Application Number Title Priority Date Filing Date
GB17287/39A Expired GB530621A (en) 1939-06-13 1939-06-13 Improvements in or relating to superimposed telegraph and telephone systems
GB19118/39A Expired GB530669A (en) 1939-06-13 1939-06-30 Improvements in or relating to circuit arrangements for combined telephone and telegraph transmission systems

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB19118/39A Expired GB530669A (en) 1939-06-13 1939-06-30 Improvements in or relating to circuit arrangements for combined telephone and telegraph transmission systems

Country Status (4)

Country Link
BE (2) BE439942A (fr)
CH (2) CH215524A (fr)
FR (2) FR947900A (fr)
GB (2) GB530621A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE972640C (de) * 1952-04-10 1959-08-27 Siemens Ag Schaltungsanordnung fuer Fernmeldeanlagen zur gleichzeitigen UEbertragung von Fernsprechstroemen und Signalen ueber dieselben Leitungsadern

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE972640C (de) * 1952-04-10 1959-08-27 Siemens Ag Schaltungsanordnung fuer Fernmeldeanlagen zur gleichzeitigen UEbertragung von Fernsprechstroemen und Signalen ueber dieselben Leitungsadern

Also Published As

Publication number Publication date
FR947900A (fr) 1949-07-15
CH215524A (de) 1941-06-30
BE439942A (fr)
FR57449E (fr) 1953-01-02
BE439843A (fr)
GB530669A (en) 1940-12-17
CH228092A (de) 1943-07-31

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