[go: up one dir, main page]

NL174518C - Telefoontoestel met luidsprekerweergave. - Google Patents

Telefoontoestel met luidsprekerweergave.

Info

Publication number
NL174518C
NL174518C NLAANVRAGE7811387,A NL7811387A NL174518C NL 174518 C NL174518 C NL 174518C NL 7811387 A NL7811387 A NL 7811387A NL 174518 C NL174518 C NL 174518C
Authority
NL
Netherlands
Prior art keywords
telephone
speaker display
speaker
display
Prior art date
Application number
NLAANVRAGE7811387,A
Other languages
English (en)
Other versions
NL7811387A (nl
NL174518B (nl
Original Assignee
Western Electric Co
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
Priority claimed from NL7210788A external-priority patent/NL7210788A/xx
Application filed by Western Electric Co filed Critical Western Electric Co
Publication of NL7811387A publication Critical patent/NL7811387A/nl
Publication of NL174518B publication Critical patent/NL174518B/nl
Application granted granted Critical
Publication of NL174518C publication Critical patent/NL174518C/nl

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
    • H04M9/10—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic with switching of direction of transmission by voice frequency

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
NLAANVRAGE7811387,A 1971-08-13 1978-11-17 Telefoontoestel met luidsprekerweergave. NL174518C (nl)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US17155071A 1971-08-13 1971-08-13
NL7210788A NL7210788A (nl) 1971-08-13 1972-08-07

Publications (3)

Publication Number Publication Date
NL7811387A NL7811387A (nl) 1979-03-30
NL174518B NL174518B (nl) 1984-01-16
NL174518C true NL174518C (nl) 1984-06-18

Family

ID=26644790

Family Applications (1)

Application Number Title Priority Date Filing Date
NLAANVRAGE7811387,A NL174518C (nl) 1971-08-13 1978-11-17 Telefoontoestel met luidsprekerweergave.

Country Status (1)

Country Link
NL (1) NL174518C (nl)

Also Published As

Publication number Publication date
NL7811387A (nl) 1979-03-30
NL174518B (nl) 1984-01-16

Similar Documents

Publication Publication Date Title
SE377990C (sv) Hogtalande telefonapparat
NL172815B (nl) Meervoudige geluidweergeefinrichting.
SE418572B (sv) Oronpropp
NL176321C (nl) Weergeefpaneel.
BE797074A (nl) Luidsprekend telefoontoestel
BR7208381D0 (pt) Microfone eletrete
CH549316A (de) Kombinierter telephon- und rechenapparat.
DK134728B (da) Telekommunikationskobling.
CH538234A (de) Münzfernsprecher
NL155700B (nl) Luidsprekende telefooninrichting.
AT325692B (de) Elektrodynamisches mikrophon
ES165419Y (es) Cabina telefonica.
AT315251B (de) Fernsprech-Handapparat
BE764856R (nl) Telefoontoestel
CH556623A (de) Fernsprechapparat.
NL174518C (nl) Telefoontoestel met luidsprekerweergave.
AT345898B (de) Sprechfunkgeraet
DE7137721U (de) Telefonhoerer
ES190147Y (es) Muneco con dispositivo sonoro.
ES171941Y (es) Soporte exhibidor sonorizado.
ES173767Y (es) Cabina telefonica.
BR7203431D0 (pt) Equipamento telefonico
CH535518A (de) Fernsprech-Handapparat
ES155554Y (es) Magnetofono con microfono incorporado.
BR7209093D0 (pt) Conjunto de telefone publico

Legal Events

Date Code Title Description
BA A request for search or an international-type search has been filed
BB A search report has been drawn up
BC A request for examination has been filed
V4 Lapsed because of reaching the maximum lifetime of a patent