DK93906C - Signalanordning ved stående mikrotelefoner. - Google Patents

Signalanordning ved stående mikrotelefoner.

Info

Publication number
DK93906C
DK93906C DK393859AA DK393859A DK93906C DK 93906 C DK93906 C DK 93906C DK 393859A A DK393859A A DK 393859AA DK 393859 A DK393859 A DK 393859A DK 93906 C DK93906 C DK 93906C
Authority
DK
Denmark
Prior art keywords
microphones
standing
signal device
signal
standing microphones
Prior art date
Application number
DK393859AA
Other languages
English (en)
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Application granted granted Critical
Publication of DK93906C publication Critical patent/DK93906C/da

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)
DK393859AA 1958-11-05 1959-11-02 Signalanordning ved stående mikrotelefoner. DK93906C (da)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
DK93906C true DK93906C (da) 1962-07-16

Family

ID=20292063

Family Applications (1)

Application Number Title Priority Date Filing Date
DK393859AA DK93906C (da) 1958-11-05 1959-11-02 Signalanordning ved stående mikrotelefoner.

Country Status (9)

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

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 (da) * 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 (da) * 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 (da) * 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
ES252928A1 (es) 1960-05-01
DE1105464B (de) 1961-04-27
FR1239676A (fr) 1960-08-26
GB918275A (en) 1963-02-13
CH377409A (de) 1964-05-15
BE584229A (fr) 1960-03-01
US3075048A (en) 1963-01-22
NL245026A (da)

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