GB191205972A - Improvements in or relating to Telephone Metering Systems. - Google Patents

Improvements in or relating to Telephone Metering Systems.

Info

Publication number
GB191205972A
GB191205972A GB191205972DA GB191205972A GB 191205972 A GB191205972 A GB 191205972A GB 191205972D A GB191205972D A GB 191205972DA GB 191205972 A GB191205972 A GB 191205972A
Authority
GB
United Kingdom
Prior art keywords
magnet
ratchet
wheel
screw
nut
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 GB191205972A publication Critical patent/GB191205972A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M15/00Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/28Arrangements 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)
  • Meter Arrangements (AREA)
  • Mobile Radio Communication Systems (AREA)
GB191205972D 1912-03-09 1912-03-09 Improvements in or relating to Telephone Metering Systems. Expired GB191205972A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191205972T 1912-03-09

Publications (1)

Publication Number Publication Date
GB191205972A true GB191205972A (en) 1912-11-21

Family

ID=32570499

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191205972D Expired GB191205972A (en) 1912-03-09 1912-03-09 Improvements in or relating to Telephone Metering Systems.

Country Status (3)

Country Link
DE (1) DE264025C (enrdf_load_stackoverflow)
FR (1) FR441168A (enrdf_load_stackoverflow)
GB (1) GB191205972A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
DE264025C (enrdf_load_stackoverflow)
FR441168A (enrdf_load_stackoverflow)

Similar Documents

Publication Publication Date Title
GB835436A (en) Improvements in or relating to apparatus for measuring in digital form constantly varying electric currents or voltages
GB191205972A (en) Improvements in or relating to Telephone Metering Systems.
US2491902A (en) Batteryless impulse transmitter
GB836583A (en) Improvements in or relating to automatic signalling systems
US2075056A (en) Meter
US2399297A (en) Frequency indicator for vibrating reed type alternators
US3641537A (en) Metering system having a remote register
US2436339A (en) Electromagnetic relay
US226485A (en) Jesse h
US1762731A (en) Magnetic device
GB191212929A (en) Improvements in and relating to Telephone Indicating and Metering Apparatus.
US1545776A (en) Ammeter
US1111742A (en) Automatic toll-recorder for telephone systems.
US1251644A (en) Telephone-exchange system.
US833741A (en) Electromagnet.
US20930A (en) Improved combination of electro and permanent magnets to render telegraphing
US596283A (en) Figjo
GB145142A (en) Improvements in electric relays, applicable more especially to relays for use in railway signalling apparatus
US1864119A (en) Call-answering device for telephone stations
US1795439A (en) Magnetic device
US832709A (en) Apparatus for insuring safety of traffic on single lines of railway.
US896222A (en) Electrical measuring instrument.
AT78114B (de) Telephonographischer Aufnahmeapparat.
GB190727675A (en) Improvements in Electromagnetically Operated Apparatus
DE926641C (de) Rundfunkstoerfreier Impulsgeber fuer elektrische Weidezaeune