EP0528732A1
(fr )
1993-02-24
Procédé et installation de visiophonie
BE516205A
(enrdf_load_html_response )
US2024581A
(en )
1935-12-17
Telegraph toll system
US2860184A
(en )
1958-11-11
Telephone system serving both regular and paystation telephones
BE363268A
(enrdf_load_html_response )
BE412533A
(enrdf_load_html_response )
BE436417A
(enrdf_load_html_response )
BE384554A
(enrdf_load_html_response )
BE528427A
(enrdf_load_html_response )
BE412135A
(enrdf_load_html_response )
BE360598A
(enrdf_load_html_response )
BE430798A
(enrdf_load_html_response )
BE400690A
(enrdf_load_html_response )
BE340840A
(enrdf_load_html_response )
BE377986A
(enrdf_load_html_response )
BE427155A
(enrdf_load_html_response )
BE427079A
(enrdf_load_html_response )
BE482011A
(enrdf_load_html_response )
BE429601A
(enrdf_load_html_response )
BE361645A
(enrdf_load_html_response )
BE413538A
(enrdf_load_html_response )
CH120389A
(fr )
1927-06-16
Installation téléphonique permettant la taxation de connexions de différentes valeurs.
BE493591A
(enrdf_load_html_response )
BE488676A
(enrdf_load_html_response )
BE427633A
(enrdf_load_html_response )