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.)
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.)
BENAUDI TELEPHON GmbH
Original Assignee
BENAUDI TELEPHON GmbH
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 BENAUDI TELEPHON GmbHfiledCriticalBENAUDI TELEPHON GmbH
Application grantedgrantedCritical
Publication of FR748752ApublicationCriticalpatent/FR748752A/fr
H04M1/00—Substation equipment, e.g. for use by subscribers
H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
H04M1/6033—Substation equipment, e.g. for use by subscribers including speech amplifiers for providing handsfree use or a loudspeaker mode in telephone sets
Landscapes
Engineering & Computer Science
(AREA)
Signal Processing
(AREA)
FR748752D1932-01-091933-01-09Téléphone ou autre installation électrique de signalisation à distance, fonctionnant avec ou sans amplificateur
ExpiredFR748752A
(fr)