GB257661A - Improvements in or relating to telephone systems - Google Patents

Improvements in or relating to telephone systems

Info

Publication number
GB257661A
GB257661A GB14485/25A GB1448525A GB257661A GB 257661 A GB257661 A GB 257661A GB 14485/25 A GB14485/25 A GB 14485/25A GB 1448525 A GB1448525 A GB 1448525A GB 257661 A GB257661 A GB 257661A
Authority
GB
United Kingdom
Prior art keywords
relay
circuit
magnet
impulse
switch
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
GB14485/25A
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 Electric Co
Original Assignee
Automatic Electric 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 FR613558D priority Critical patent/FR613558A/fr
Priority to US1688161D priority patent/US1688161A/en
Application filed by Automatic Electric Co filed Critical Automatic Electric Co
Priority to GB14485/25A priority patent/GB257661A/en
Publication of GB257661A publication Critical patent/GB257661A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Relay Circuits (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
GB14485/25A 1925-06-04 1925-06-04 Improvements in or relating to telephone systems Expired GB257661A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR613558D FR613558A (enrdf_load_stackoverflow) 1925-06-04
US1688161D US1688161A (en) 1925-06-04 stehlik
GB14485/25A GB257661A (en) 1925-06-04 1925-06-04 Improvements in or relating to telephone systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB14485/25A GB257661A (en) 1925-06-04 1925-06-04 Improvements in or relating to telephone systems

Publications (1)

Publication Number Publication Date
GB257661A true GB257661A (en) 1926-09-06

Family

ID=10042038

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14485/25A Expired GB257661A (en) 1925-06-04 1925-06-04 Improvements in or relating to telephone systems

Country Status (3)

Country Link
US (1) US1688161A (enrdf_load_stackoverflow)
FR (1) FR613558A (enrdf_load_stackoverflow)
GB (1) GB257661A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
FR613558A (enrdf_load_stackoverflow) 1926-11-24
US1688161A (en) 1928-10-16

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