SE339833B - - Google Patents

Info

Publication number
SE339833B
SE339833B SE02086/70A SE208670A SE339833B SE 339833 B SE339833 B SE 339833B SE 02086/70 A SE02086/70 A SE 02086/70A SE 208670 A SE208670 A SE 208670A SE 339833 B SE339833 B SE 339833B
Authority
SE
Sweden
Prior art keywords
telephone
instrument
support unit
loudspeaking
base support
Prior art date
Application number
SE02086/70A
Other languages
English (en)
Inventor
K Blomberg
Original Assignee
K Blomberg
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 K Blomberg filed Critical K Blomberg
Priority to SE02086/70A priority Critical patent/SE339833B/xx
Priority to US00115388A priority patent/US3772472A/en
Priority to CH228471A priority patent/CH517421A/de
Publication of SE339833B publication Critical patent/SE339833B/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H04M1/62—Constructional arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
SE02086/70A 1970-02-18 1970-02-18 SE339833B (xx)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE02086/70A SE339833B (xx) 1970-02-18 1970-02-18
US00115388A US3772472A (en) 1970-02-18 1971-02-16 Switching device for telephone instruments, adapted to alternately be used as lowspeaking and loudspeaking telephones
CH228471A CH517421A (de) 1970-02-18 1971-02-17 Einrichtung mit einem Telefonapparat zur Gesprächswiedergabe mit kleiner und grosser Lautstärke

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE02086/70A SE339833B (xx) 1970-02-18 1970-02-18

Publications (1)

Publication Number Publication Date
SE339833B true SE339833B (xx) 1971-10-25

Family

ID=20259348

Family Applications (1)

Application Number Title Priority Date Filing Date
SE02086/70A SE339833B (xx) 1970-02-18 1970-02-18

Country Status (3)

Country Link
US (1) US3772472A (xx)
CH (1) CH517421A (xx)
SE (1) SE339833B (xx)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4495383A (en) * 1982-06-14 1985-01-22 Air Conditioning Corporation Hands-free telephone-speaker interfacer
US4493950A (en) * 1982-12-17 1985-01-15 Lott Thomas M Loudspeaker telephone
DE3412111A1 (de) * 1984-03-31 1985-10-10 Standard Elektrik Lorenz Ag, 7000 Stuttgart Schaltungsanordnung fuer eine sprachgesteuerte freisprecheinrichtung
DE3616314A1 (de) * 1986-05-13 1987-11-19 Krone Ag Fernsprechapparat mit freisprecheinrichtung
US5050209A (en) * 1988-08-31 1991-09-17 Nec Corporation Telephone set

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2657265A (en) * 1948-01-23 1953-10-27 Branson John Charles Sydney Amplifying device for use with telephone apparatus
BE539848A (xx) * 1954-07-16
US2895007A (en) * 1955-11-03 1959-07-14 Ericsson Telefon Ab L M Telephone installation
GB870090A (en) * 1958-01-18 1961-06-14 Lars Axel Tjeder Improvements in and relating to telephone instruments
US3041411A (en) * 1958-06-10 1962-06-26 Donald C Beatty Automatic, circuit-condition-change-responsive, on-off control for loudspeaking telephone and the like
NL245026A (xx) * 1958-11-05
US3100818A (en) * 1959-11-06 1963-08-13 Thomas F Carter Communication systems
US3156771A (en) * 1960-11-14 1964-11-10 Elijah J Vaughn Telephone loud-speaker combination
NO120997B (xx) * 1964-10-19 1971-01-04 Ring System Maskiner Gustav

Also Published As

Publication number Publication date
US3772472A (en) 1973-11-13
CH517421A (de) 1971-12-31

Similar Documents

Publication Publication Date Title
NL7511164A (nl) Schakelinrichting.
NL7503861A (nl) Schakelinrichting.
NL7503141A (nl) Conferentieschakeling voor telefoongebruik.
NL7501614A (nl) Schakelinrichting.
ES194687Y (es) Un dispositivo interruptor o conmutador electrico.
SE339833B (xx)
IT1010437B (it) Dispositivo di commutazione dotato di contatti
NL7500961A (nl) Schakelinrichting.
NL7506140A (nl) Schakelinrichting.
ES200696Y (es) Un dispositivo interruptor electrico.
NL7610920A (nl) Geintegreerde schakelinrichting.
NL188920C (nl) Prioriteits-gestuurde schakelinrichting.
CA941532A (en) Operating device for push button-dialled telephone
IT1010436B (it) Dispositivo di commutazione dotato di contatti
NL7614392A (nl) Schakelinrichting.
BE847252A (fr) Appareil de commutation de signalisation,
CH390361A (de) Schaltgerät in Schmalbauform mit Einfachunterbrechungskontakt
AU451537B2 (en) Switching device for telephone instruments
AU2590271A (en) Switching device for telephone instruments
NL7506454A (nl) Telefoon-conferentie-schakeling.
GB939176A (en) Improvements in or relating to telephone subscriber's apparatus
CH544995A (de) Tastenschaltvorrichtung zur Betätigung von Kontaktfedersätzen
ES221213Y (es) Dispositivo interruptor electrico.
FR2273332A1 (en) Desk key for language teacher - has illuminating device and built-in electrical switches
AU245238B2 (en) Photoelectric contact instrument with switch apparatus