GB918275A - Improvements in or relating to signalling arrangements in standing micro-telephone instruments - Google Patents

Improvements in or relating to signalling arrangements in standing micro-telephone instruments

Info

Publication number
GB918275A
GB918275A GB36206/59A GB3620659A GB918275A GB 918275 A GB918275 A GB 918275A GB 36206/59 A GB36206/59 A GB 36206/59A GB 3620659 A GB3620659 A GB 3620659A GB 918275 A GB918275 A GB 918275A
Authority
GB
United Kingdom
Prior art keywords
sound producer
handle
funnel
resonators
telephone
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
GB36206/59A
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Publication of GB918275A publication Critical patent/GB918275A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Telephone Function (AREA)
  • Telephone Set Structure (AREA)
GB36206/59A 1958-11-05 1959-10-26 Improvements in or relating to signalling arrangements in standing micro-telephone instruments Expired GB918275A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE1028558 1958-11-05

Publications (1)

Publication Number Publication Date
GB918275A true GB918275A (en) 1963-02-13

Family

ID=20292063

Family Applications (1)

Application Number Title Priority Date Filing Date
GB36206/59A Expired GB918275A (en) 1958-11-05 1959-10-26 Improvements in or relating to signalling arrangements in standing micro-telephone instruments

Country Status (9)

Country Link
US (1) US3075048A (forum.php)
BE (1) BE584229A (forum.php)
CH (1) CH377409A (forum.php)
DE (1) DE1105464B (forum.php)
DK (1) DK93906C (forum.php)
ES (1) ES252928A1 (forum.php)
FR (1) FR1239676A (forum.php)
GB (1) GB918275A (forum.php)
NL (1) NL245026A (forum.php)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB985198A (en) * 1961-05-11 1965-03-03 Post Office Improvements in or relating to signalling circuits
BE622412A (forum.php) * 1961-09-13
GB989232A (en) * 1961-12-08 1965-04-14 Post Office Improvements in or relating to signalling circuits
US3210479A (en) * 1962-08-30 1965-10-05 Automatic Elect Lab Voice-frequency selective signalling arrangement
US3254161A (en) * 1963-01-17 1966-05-31 North Electric Co Ringing arrangement for substation telephone instrument
DE1247413B (de) * 1964-09-30 1967-08-17 Siemens Ag Anruforgan fuer Teilnehmer-, insbesondere Fernsprechteilnehmerstationen
GB1128053A (en) * 1965-07-26 1968-09-25 Standard Telephones Cables Ltd Acoustic signalling means particularly for telephone sets
SE339833B (forum.php) * 1970-02-18 1971-10-25 K Blomberg

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE465890A (forum.php) * 1942-12-30
US2392321A (en) * 1944-05-30 1946-01-08 Bell Telephone Labor Inc Desk telephone set
US2910538A (en) * 1957-06-10 1959-10-27 Gen Telephone Lab Inc Desk telephone
US2951910A (en) * 1958-01-14 1960-09-06 North Electric Co Substation signalling device

Also Published As

Publication number Publication date
US3075048A (en) 1963-01-22
DE1105464B (de) 1961-04-27
FR1239676A (fr) 1960-08-26
CH377409A (de) 1964-05-15
ES252928A1 (es) 1960-05-01
DK93906C (da) 1962-07-16
BE584229A (fr) 1960-03-01
NL245026A (forum.php)

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