GB175260A - Improvements in or relating to telephone systems and impulse senders for use in connection therewith - Google Patents

Improvements in or relating to telephone systems and impulse senders for use in connection therewith

Info

Publication number
GB175260A
GB175260A GB2145/22A GB214522A GB175260A GB 175260 A GB175260 A GB 175260A GB 2145/22 A GB2145/22 A GB 2145/22A GB 214522 A GB214522 A GB 214522A GB 175260 A GB175260 A GB 175260A
Authority
GB
United Kingdom
Prior art keywords
relay
relays
wire
circuit
trunk
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
GB2145/22A
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 GB175260A publication Critical patent/GB175260A/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)
  • Structure Of Telephone Exchanges (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
GB2145/22A 1921-02-09 1922-01-24 Improvements in or relating to telephone systems and impulse senders for use in connection therewith Expired GB175260A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US175260XA 1921-02-09 1921-02-09

Publications (1)

Publication Number Publication Date
GB175260A true GB175260A (en) 1923-04-12

Family

ID=21783092

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2145/22A Expired GB175260A (en) 1921-02-09 1922-01-24 Improvements in or relating to telephone systems and impulse senders for use in connection therewith

Country Status (3)

Country Link
US (3) US1615998A (enrdf_load_stackoverflow)
FR (2) FR543550A (enrdf_load_stackoverflow)
GB (1) GB175260A (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2749535A (en) * 1951-11-23 1956-06-05 Westinghouse Electric Corp Telemetering systems

Also Published As

Publication number Publication date
FR26655E (enrdf_load_stackoverflow)
US1614678A (en) 1927-01-18
FR543550A (fr) 1922-09-05
USRE17632E (en) 1930-04-01
US1615998A (en) 1927-02-01

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