GB301843A - Improvements in or relating to telephone systems - Google Patents

Improvements in or relating to telephone systems

Info

Publication number
GB301843A
GB301843A GB36043/28A GB3604328A GB301843A GB 301843 A GB301843 A GB 301843A GB 36043/28 A GB36043/28 A GB 36043/28A GB 3604328 A GB3604328 A GB 3604328A GB 301843 A GB301843 A GB 301843A
Authority
GB
United Kingdom
Prior art keywords
relating
telephone systems
telegraph
aug
accepted
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
GB36043/28A
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
Application filed by Associated Telephone and Telegraph Co filed Critical Associated Telephone and Telegraph Co
Publication of GB301843A publication Critical patent/GB301843A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite
    • H04Q3/62—Arrangements providing connection between main exchange and sub-exchange or satellite for connecting to private branch exchanges
    • H04Q3/625—Arrangements in the private branch exchange

Landscapes

  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Meter Arrangements (AREA)
  • Interface Circuits In Exchanges (AREA)

Abstract

301,843. Associated Telephone & Telegraph Co. Aug. 13, 1927, [Convention date]. Divided on 295,572. Drawings to Specification. Charging and discharging batteries. - The Specification as open to inspection under Sect. 91 (3) (a) describes the same charging system as in Specifications 295,572 and 301,844. This subject-matter does not appear in the Specification as accepted.
GB36043/28A 1927-08-13 1928-03-23 Improvements in or relating to telephone systems Expired GB301843A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE301843X 1927-08-13

Publications (1)

Publication Number Publication Date
GB301843A true GB301843A (en) 1929-06-24

Family

ID=3867436

Family Applications (1)

Application Number Title Priority Date Filing Date
GB36043/28A Expired GB301843A (en) 1927-08-13 1928-03-23 Improvements in or relating to telephone systems

Country Status (2)

Country Link
US (1) US1789606A (en)
GB (1) GB301843A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE750213C (en) * 1936-02-13 1944-12-20 Circuit arrangement for telephone extension systems with dialer operation
FR954202A (en) * 1946-10-11 1949-12-21 Automatic Elect Lab Automatic switching telephone system, especially for long distance calls
US2636947A (en) * 1949-12-16 1953-04-28 Bell Telephone Labor Inc Two-way trunk for pulse conversion systems
US2690478A (en) * 1951-05-10 1954-09-28 Int Standard Electric Corp Circuit arrangement for communication systems, in particular private automatic telephone branch exchanges
US2897280A (en) * 1956-12-26 1959-07-28 Gen Telephone Lab Inc Inter-office trunking system

Also Published As

Publication number Publication date
US1789606A (en) 1931-01-20

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