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.)
Publication of BE529226ApublicationCriticalpatent/BE529226A/xx
H04M1/00—Substation equipment, e.g. for use by subscribers
H04M1/64—Automatic arrangements for answering calls; Automatic arrangements for recording messages for absent subscribers; Arrangements for recording conversations
H04M1/65—Recording arrangements for recording a message from the calling party
G—PHYSICS
G08—SIGNALLING
G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
G08B5/00—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied
G08B5/22—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission
G08B5/221—Local indication of seats occupied in a facility, e.g. in a theatre
H—ELECTRICITY
H04—ELECTRIC COMMUNICATION TECHNIQUE
H04M—TELEPHONIC COMMUNICATION
H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
H04M11/02—Telephonic communication systems specially adapted for combination with other electrical systems with bell or annunciator systems
Panneaux autonomes ou interconnectes telecommandes par voie telephonique permettant l'affichage a distance des messages s'exprimant par un ensemble de signaux tout ou rien