CH311993A
(en )
1955-12-15
Transmission system for telegraphy.
CH203557A
(en )
1939-03-15
Device for receiving messages that are transmitted over line networks using high-frequency carrier waves.
CH210431A
(en )
1940-07-15
Telegraph transmitter.
CH232468A
(en )
1944-05-31
Type printing telegraph apparatus.
CH233477A
(en )
1944-07-31
Send contact device for telegraph transmitter.
CH218772A
(en )
1941-12-31
Printing telegraph device.
CH210925A
(en )
1940-08-15
Pressure telegraph apparatus.
SU2633A1
(en )
1927-03-31
Device for radio transmission
CH206314A
(en )
1939-07-31
Carrier wave telephony system.
CH206859A
(en )
1939-08-31
Telephone system in which a transmitter station shared by several participants transmits high-frequency messages.
ES143952A1
(en )
1942-04-01
A provision for transmitting communications by means of high frequency carrier waves in conductors or lines, especially in radio transmission.
CH206858A
(en )
1939-08-31
Teletype receiver.
CA238405A
(en )
1924-03-11
Apparatus for dehydration, etc.
DK52236C
(en )
1936-09-28
High frequency carrier transmission system.
CA239750A
(en )
1924-04-29
Wireless telegraph receiving apparatus
FR900426A
(en )
1945-06-28
Selector, in particular for teleprinter receiver
DK33771C
(en )
1924-10-20
Transmission and Receiving System for Radio Telegraphy.
CA241516A
(en )
1924-07-15
Apparatus for deshydrating and carbonizing peat, etc.
FR637417A
(en )
1928-04-30
Soft tube for pastes, ointments, etc.
CA210116A
(en )
1921-04-05
Wireless telegraph apparatus
AT156052B
(en )
1939-05-10
Transmitting and receiving arrangement for directed wireless communication.
CH288282A
(en )
1953-01-15
Teletypewriter for automatic telex operator.
CH225891A
(en )
1943-02-28
Device for receiving and amplifying telegraph signal streams.
ES77072A1
(en )
1921-04-16
Improvements in receiving devices for wireless telegraphy.
CA245376A
(en )
1924-12-16
Receiving apparatus for wireless telegraphy and telephony