FR2315207A1
(en )
1977-01-14
TELEPHONE LINE SIGNALING DEVICE
BE791760A
(en )
1973-03-16
TELEPHONE ANSWERING SYSTEM
BE799392A
(en )
1973-11-12
NUMBERING CIRCUIT FOR TELEPHONE SUBSCRIBER DEVICE,
BE823215A
(en )
1975-04-01
SUBSCRIBER TELEPHONE CIRCUIT
BE821219A
(en )
1975-04-18
DIGITAL CONFERENCE CIRCUIT FOR TELECOMMUNICATION SYSTEM
BE773394A
(en )
1972-04-04
DIGITAL PULSE GENERATOR FOR TELEPHONE SIGNALING
BE816796A
(en )
1974-12-27
SIGNALING SYSTEM
BE858935A
(en )
1978-01-16
SIGNALING UNIT FOR TELEPHONE CENTRAL
BE818673A
(en )
1974-12-02
TELEPHONE TRANSIT CENTER FOR ASYNCHRONOUS DATA
IT1003855B
(en )
1976-06-10
REMOTE SIGNALING AND REMOTE SWITCHING DEVICE
BE823866A
(en )
1975-06-27
INTERFACE FOR ENTERING SIGNALING FOR TELEPHONE CENTRAL
BE814561A
(en )
1974-09-02
BOX FOR TELEPHONE UNIT
BE818484A
(en )
1975-02-05
MULTIPLEXER FOR TELEPHONE CHANNELS
BE791256A
(en )
1973-05-10
SWITCH ESPECIALLY FOR TELECOMMUNICATIONS INSTALLATIONS
FR2438403B1
(en )
1986-12-12
MULTI-FREQUENCY TONE DECODER FOR TELEPHONE SIGNALING
AT336694B
(en )
1977-05-25
EXTENSION TELEPHONE SYSTEM
BE813395A
(en )
1974-07-31
INTERCONNECTOR FOR TELEPHONE ELEMENTS
IT1010893B
(en )
1977-01-20
PRIVATE TELEPHONE SWITCHBOARD
AT323244B
(en )
1975-06-25
TIME MULTIPLEX TELEPHONE SWITCHING SYSTEM
BE819816A
(en )
1975-03-12
MULTIFREQUENT SIGNALING SYSTEM
BE811115A
(en )
1974-05-29
TERMINAL CLAMP FOR SUSPENDED CABLE
BE823214A
(en )
1975-04-01
SUBSCRIBER TELEPHONE CIRCUIT
BE770465A
(en )
1972-01-26
ECONOMIC CONSTRUCTION DISTRIBUTOR FOR TELEPHONE EQUIPMENT
BR7400666D0
(en )
1974-11-05
TELEPHONE DEVICE DIALING DEVICE
BE817196R
(en )
1975-01-03
NUMBERING CIRCUIT FOR TELEPHONE SUBSCRIBER DEVICE