GB466301A
(enrdf_load_stackoverflow )
GB1442697A
(en )
1976-07-14
Shutter mechanism for a camera
US2368104A
(en )
1945-01-30
Impulse sender for use in telephone or like systems
US2463717A
(en )
1949-03-08
Impulse sender
GB484308A
(en )
1938-05-04
Improvements in automatic burglar and fire alarms
US1218795A
(en )
1917-03-13
Indicating and recording apparatus.
US2550076A
(en )
1951-04-24
Fire alarm
US2589160A
(en )
1952-03-11
Relay test set
US2542880A
(en )
1951-02-20
Condition-responsive apparatus for calling preselected telephone numbers
US2666821A
(en )
1954-01-19
Checking and control arrangement for facsimile telegraph apparatus
GB141710A
(enrdf_load_stackoverflow )
US1154250A
(en )
1915-09-21
Operator's calling device.
US2112773A
(en )
1938-03-29
Automatic electric motor starting device for telegraph apparatus
US1354814A
(en )
1920-10-05
Impulse-transmitting device
GB784351A
(en )
1957-10-09
Improvements in or relating to dial switches for use in telephone or like switching systems
GB865566A
(en )
1961-04-19
Improvements in or relating to automatic stop mechanisms for use with telegraph printers
US2873308A
(en )
1959-02-10
Switching arrangement for an electric motor
US1114049A
(en )
1914-10-20
Signaling system.
US1391442A
(en )
1921-09-20
Call-sending device
GB642090A
(en )
1950-08-30
Keyboard impulse transmitter for step-by-step printing telegraph
GB377437A
(en )
1932-07-28
Current impulse transmitter for signalling installations, in particular fire alarm installations
SU273264A1
(ru )
Наборное устройство телеграфного аппарата
GB191409718A
(en )
1915-07-08
An Improved Electro-mechanical Selector.
GB959628A
(en )
1964-06-03
Improvements in or relating to devices for sending or receiving coded electrical signals
GB764738A
(en )
1957-01-02
Improvements in or relating to start-stop teleprinter receivers