GB302200A - Improvements in or relating to automatic or semi-automatic telephone systems - Google Patents

Improvements in or relating to automatic or semi-automatic telephone systems

Info

Publication number
GB302200A
GB302200A GB21042/27A GB2104227A GB302200A GB 302200 A GB302200 A GB 302200A GB 21042/27 A GB21042/27 A GB 21042/27A GB 2104227 A GB2104227 A GB 2104227A GB 302200 A GB302200 A GB 302200A
Authority
GB
United Kingdom
Prior art keywords
relay
over
digit
register
relays
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
GB21042/27A
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.)
Associated Telephone and Telegraph Co
Original Assignee
Associated Telephone and Telegraph Co
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 FR39002D priority Critical patent/FR39002E/fr
Application filed by Associated Telephone and Telegraph Co filed Critical Associated Telephone and Telegraph Co
Priority to GB32131/28A priority patent/GB302217A/en
Priority to GB21042/27A priority patent/GB302200A/en
Priority to US297610A priority patent/US1837003A/en
Priority to FR702872D priority patent/FR702872A/fr
Publication of GB302200A publication Critical patent/GB302200A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0016—Arrangements providing connection between exchanges

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Exchange Systems With Centralized Control (AREA)
  • Relay Circuits (AREA)
GB21042/27A 1927-08-09 1927-08-09 Improvements in or relating to automatic or semi-automatic telephone systems Expired GB302200A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FR39002D FR39002E (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1927-08-09
GB32131/28A GB302217A (en) 1927-08-09 1927-08-09 Improvements in or relating to automatic or semi-automatic telephone systems
GB21042/27A GB302200A (en) 1927-08-09 1927-08-09 Improvements in or relating to automatic or semi-automatic telephone systems
US297610A US1837003A (en) 1927-08-09 1928-08-06 Automatic telephone system
FR702872D FR702872A (fr) 1927-08-09 1928-08-09 Systèmes de liaisons téléphoniques entre bureaux <<pas à pas>> et bureaux de contrôle en retour

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB21042/27A GB302200A (en) 1927-08-09 1927-08-09 Improvements in or relating to automatic or semi-automatic telephone systems

Publications (1)

Publication Number Publication Date
GB302200A true GB302200A (en) 1928-12-10

Family

ID=10156190

Family Applications (2)

Application Number Title Priority Date Filing Date
GB21042/27A Expired GB302200A (en) 1927-08-09 1927-08-09 Improvements in or relating to automatic or semi-automatic telephone systems
GB32131/28A Expired GB302217A (en) 1927-08-09 1927-08-09 Improvements in or relating to automatic or semi-automatic telephone systems

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB32131/28A Expired GB302217A (en) 1927-08-09 1927-08-09 Improvements in or relating to automatic or semi-automatic telephone systems

Country Status (3)

Country Link
US (1) US1837003A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (2) FR702872A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (2) GB302200A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL71657C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1940-06-11
US2421717A (en) * 1943-04-28 1947-06-03 Kellogg Switchboard & Supply Automatic telephone system
GB577648A (en) * 1944-04-01 1946-05-27 Automatic Telephone & Elect Improvements in or relating to telephone systems
GB586380A (en) * 1944-12-08 1947-03-17 Automatic Telephone & Elect Improvements in telephone systems

Also Published As

Publication number Publication date
FR702872A (fr) 1931-04-18
FR39002E (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1931-08-25
US1837003A (en) 1931-12-15
GB302217A (en) 1928-12-10

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