GB191028368A - Improvements in or relating to Telephone Call Recorders. - Google Patents

Improvements in or relating to Telephone Call Recorders.

Info

Publication number
GB191028368A
GB191028368A GB191028368DA GB191028368A GB 191028368 A GB191028368 A GB 191028368A GB 191028368D A GB191028368D A GB 191028368DA GB 191028368 A GB191028368 A GB 191028368A
Authority
GB
United Kingdom
Prior art keywords
armature
current
detent
ratchet
spring
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
Other languages
English (en)
Inventor
Alfred Julius Boult
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of GB191028368A publication Critical patent/GB191028368A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/28—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP with meter at substation or with calculation of charges at terminal

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
GB191028368D 1910-12-06 1910-12-06 Improvements in or relating to Telephone Call Recorders. Expired GB191028368A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191028368T 1910-12-06

Publications (1)

Publication Number Publication Date
GB191028368A true GB191028368A (en) 1911-08-31

Family

ID=32495400

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191028368D Expired GB191028368A (en) 1910-12-06 1910-12-06 Improvements in or relating to Telephone Call Recorders.

Country Status (3)

Country Link
DE (1) DE246522C (ja)
FR (1) FR423359A (ja)
GB (1) GB191028368A (ja)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2756545C3 (de) * 1977-12-19 1984-09-06 Elmeg Elektro-Mechanik Gmbh, 3150 Peine Rückholfederaufhängung bei einem Zählwerk

Also Published As

Publication number Publication date
FR423359A (fr) 1911-04-14
DE246522C (ja)

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