FR1172315A
(en )
1959-02-09
Improvements to multi-channel recording systems
FR1248127A
(en )
1960-10-31
Improvements to recording matrices
FR1200828A
(en )
1959-12-24
Improvements to magnetic recording systems
FR1227487A
(en )
1960-08-22
Improvements to recording devices
FR72138E
(en )
1960-03-30
Improvements to magnetic memory recording systems
FR1235609A
(en )
1960-07-08
Magnetic recording system
FR1244561A
(en )
1961-01-23
Improvements to information media
FR1415096A
(en )
1965-10-22
Improvements to recording systems
FR1277182A
(en )
1961-11-24
Improvements to information recording devices
FR1120556A
(en )
1956-07-09
Improvements to magnetic antenna systems
BE575405A
(en )
1959-08-05
Improvements to magnetic recording systems
CH375925A
(en )
1964-03-15
Magnetic recorder
FR73957E
(en )
1960-10-31
Improvements to magnetic recording systems
FR74907E
(en )
1961-03-03
Improvements to magnetic recording systems
FR74476E
(en )
1960-12-19
Improvements to magnetic recording systems
FR76119E
(en )
1961-09-15
Improvements to magnetic recording systems
FR1279815A
(en )
1961-12-22
Improvements to magnetic recording systems
FR80569E
(en )
1963-05-17
Improvements to magnetic recording systems
FR82072E
(en )
1963-12-20
Improvements to magnetic recording systems
BE609596A
(en )
1962-04-26
Improvements to magnetic recording systems
FR1190819A
(en )
1959-10-15
Improvements to magnetic notch wedges
FR77498E
(en )
1962-03-09
Improvements to information exploitation systems
BE599816A
(en )
1961-08-03
Improvements to magnetic recording systems.
FR1120846A
(en )
1956-07-13
Improvements to magnetic antenna systems
FR1251685A
(en )
1961-01-20
Magnetic recording systems