BE596084A
(en )
1961-04-17
Improvement brought to vennes.
BE593757A
(en )
1960-12-01
Improvements to electro-precipitators.
BE596302A
(en )
1961-02-15
Improvements made to coding devices.
FR1195011A
(en )
1959-11-13
Improvements to pumping devices
BE592933A
(en )
1960-10-31
Improvements to positioning devices.
BE580013A
(en )
1959-10-16
Improvements to valves.
FR1238449A
(en )
1960-08-12
Improvements to electro-acoustic devices
BE598058A
(en )
1961-03-31
Improvements relating to semiconductor devices.
BE590480A
(en )
1960-09-01
Improvements to amplifying devices.
FR1269391A
(en )
1961-08-11
Improvements to cooling devices
BE594917A
(en )
1961-03-13
Improvements to telephone systems.
FR1282222A
(en )
1962-01-19
Improvements to anti-ram devices
FR1412352A
(en )
1965-10-01
Improvements to valves
FR75647E
(en )
1961-07-21
Improvements to valves
BE584582A
(en )
1960-05-13
Improvements to magnetic tripping devices.
BE578396A
(en )
1959-11-05
Improvements to translation devices.
FR1268228A
(en )
1961-07-28
Improvements to transistors
BE588613A
(en )
1960-07-01
Improvements to regulatory devices.
FR80292E
(en )
1963-04-05
Improvements to electroluminescent devices
FR1249440A
(en )
1960-12-30
Improvements to printing devices
FR1231836A
(en )
1960-10-03
Improvements to winding devices
FR1238334A
(en )
1960-08-12
Improvements to dispensing devices
FR1242950A
(en )
1960-10-07
Improvements to peak limiting devices
BE577495A
(en )
1959-10-08
Improvements to winders.
BE592751A
(en )
1960-10-31
Memorandum devices.