DK65068C
(en )
1946-11-18
Telephone systems or similar Remote signaling systems comprising one or more Steps Group selectors.
CH252653A
(en )
1948-01-15
Circuit arrangement in telecommunications systems.
CH225893A
(en )
1943-02-28
Button for telecommunications, in particular telephone systems.
CH233692A
(en )
1944-08-15
Circuit arrangement in telecommunication systems, in particular telephone systems.
CH230813A
(en )
1944-01-31
Circuit arrangement with a selector in telecommunications systems, in particular telephone systems.
CH252927A
(en )
1948-01-31
Circuit arrangement for determining one of a plurality of lines in telecommunications systems with at least partial dialer operation.
CH226354A
(en )
1943-03-31
Arrangement in telephone systems.
CH226130A
(en )
1943-03-15
Battery network receiver with automatic switching.
CH225671A
(en )
1943-02-15
Circuit arrangement in telephone systems, in particular private branch exchanges, with several centers.
CH234468A
(en )
1944-09-30
Circuit arrangement in telephone systems with dialer operation.
CH480766A
(en )
1969-10-31
Circuit arrangement for determining the free or busy state of intermediate lines of a switching network in telecommunications, in particular telephone systems
CH231803A
(en )
1944-04-15
Circuit arrangement in telephone systems with preset mixed selectors.
CH226796A
(en )
1943-04-30
Circuit arrangement in telephone systems with dialer operation.
CH225935A
(en )
1943-02-28
Circuit arrangement in telephone systems with dialer operation.
CH315053A
(en )
1956-07-15
Circuit arrangement in telecommunication systems, in particular telephone systems
CH233693A
(en )
1944-08-15
Circuit arrangement for the direction of non-directional connecting lines in telecommunications systems, in particular telephone systems, with dialer operation.
CH293824A
(en )
1953-10-15
Circuit arrangement for surge storage in telecommunication systems, in particular telephone systems with dialer operation.
CH214510A
(en )
1941-04-30
Switching device in telecommunications systems, in particular in telephone systems.
CH245547A
(en )
1946-11-15
Circuit arrangement in telephone systems with several exchanges.
CH231157A
(en )
1944-02-29
Circuit arrangement in telephone systems with connecting lines provided with several branch points.
CH234897A
(en )
1944-10-31
Circuit arrangement in telephone systems with several exchanges that can be switched in series.
CH237098A
(en )
1945-03-31
Circuit arrangement in telephone systems with several exchanges in series.
CH243484A
(en )
1946-07-15
Circuit arrangement in telephone systems with several exchanges in series.
CH228350A
(en )
1943-08-15
Circuit arrangement for counting connections of different values in telecommunications, in particular telephone systems.
CH226574A
(en )
1943-04-15
Circuit arrangement for telephone systems with dialer operation.