US3768054A
(en )
1973-10-23
Low flux leakage magnet construction
US2275880A
(en )
1942-03-10
Magnetic structure
US1920764A
(en )
1933-08-01
nickle
US3798391A
(en )
1974-03-19
Movable magnet loudspeaker
GB513895A
(en )
1939-10-25
Improvements in telephone instruments
US2249160A
(en )
1941-07-15
Acoustic device
GB747736A
(en )
1956-04-11
Improvements in or relating to devices comprising a circuit of highly-permeable material and a permanent magnet for producing a pre-magnetizing field in said circuit
GB298768A
(de )
US3775684A
(en )
1973-11-27
Accelerometer
US2272767A
(en )
1942-02-10
Direct current ammeter and voltmeter
GB456988A
(de )
US2516740A
(en )
1950-07-25
Moving coil electrical instrument
US1643169A
(en )
1927-09-20
Telephone receiver
US2866028A
(en )
1958-12-23
Electrically actuated contactor
US1531965A
(en )
1925-03-31
Induction transmitter
GB1336481A
(en )
1973-11-07
Method of magnetizing a permanent magnet assembly and a per manent magnet assembly when prepared by the method
GB547728A
(en )
1942-09-08
Improvements relating to electromagnetic telephone instruments
GB561866A
(de )
GB668057A
(en )
1952-03-12
Improvements in or relating to permanent magnets
US1551143A
(en )
1925-08-25
Telephone receiver
GB658125A
(de )
SU1571689A1
(ru )
1990-06-15
Демагнитизатор
US9281110B2
(en )
2016-03-08
External-magnet-type magnetic circuit
GB1003486A
(en )
1965-09-02
Electromagnetic relays
GB191226242A
(en )
1913-01-23
Improvements in and connected with Moving Coil Electrical Measuring and like Instruments.