|
GB696126A
|
|
Improvements in magnets with annular gaps
|
|
GB667170A
|
|
Improvements in moving coil loudspeakers
|
|
GB635495A
|
|
Improvements in magnets
|
|
GB625591A
|
|
Improvements in magnets
|
|
GB635494A
|
|
Improvements in magnets
|
|
GB561273A
|
|
Improvements in or relating to the mounting or fixing of gramophone needles, reproducing points or the like
|
|
GB555675A
|
|
Improvements in needles or reproducing points for use with gramophone tracks or the like
|
|
GB538058A
|
|
Improvements in or relating to moving coil pickups
|
|
GB447749A
|
|
Improvements in means for converting electrical energy into sound
|
|
GB435042A
|
|
Improvements in means for controlling the path of a moving or vibrating part such asthe moving coil of a loudspeaker
|
|
GB404037A
|
|
Improved means of distributing sound
|
|
GB413758A
|
|
Improvements in or relating to moving coil loudspeakers
|
|
GB375909A
|
|
Improvements in apparatus for the electric reproduction of gramophone records
|
|
GB353220A
|
|
Improvements in or relating to photo-electric cell circuits
|
|
GB332730A
|
|
Improvements in or relating to centering devices for moving coil loud speakers
|
|
GB335290A
|
|
Improvements in hinged devices suitable for acoustic and other instruments
|
|
GB332995A
|
|
Improvements in or relating to diaphragms for acoustic instruments, pressure gauges or the like
|
|
GB332996A
|
|
Improvements in or relating to electric soundboxes
|
|
GB331209A
|
|
Improvements in magnets
|
|
GB329747A
|
|
Improvements in thermionic or like amplifiers
|
