GB234059A - Improvements in or relating to telephone systems - Google Patents

Improvements in or relating to telephone systems

Info

Publication number
GB234059A
GB234059A GB7256/25A GB725625A GB234059A GB 234059 A GB234059 A GB 234059A GB 7256/25 A GB7256/25 A GB 7256/25A GB 725625 A GB725625 A GB 725625A GB 234059 A GB234059 A GB 234059A
Authority
GB
United Kingdom
Prior art keywords
relay
relays
over
finder
wiper
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
GB7256/25A
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.)
Automatic Telephone Manufacturing Co Ltd
Original Assignee
Automatic Telephone Manufacturing 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
Application filed by Automatic Telephone Manufacturing Co Ltd filed Critical Automatic Telephone Manufacturing Co Ltd
Publication of GB234059A publication Critical patent/GB234059A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Relay Circuits (AREA)
GB7256/25A 1924-05-19 1925-03-17 Improvements in or relating to telephone systems Expired GB234059A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US714188A US1656300A (en) 1924-05-19 1924-05-19 Telephone system

Publications (1)

Publication Number Publication Date
GB234059A true GB234059A (en) 1926-06-17

Family

ID=24869062

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7256/25A Expired GB234059A (en) 1924-05-19 1925-03-17 Improvements in or relating to telephone systems

Country Status (3)

Country Link
US (1) US1656300A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR600993A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB234059A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB600423A (en) * 1945-10-05 1948-04-08 Siemens Brothers & Co Ltd Improvements relating to automatic telephone systems
US2552773A (en) * 1947-06-24 1951-05-15 Automatic Elect Lab Level marking for telephone line finders

Also Published As

Publication number Publication date
US1656300A (en) 1928-01-17
FR600993A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1926-02-19

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