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GB343363A
|
|
Braking arrangement for cinematographic reels
|
|
GB327918A
|
|
Cinematographic apparatus with continuous travel of the film
|
|
GB312177A
|
|
Cinematographic projection apparatus with continuous travel of the film
|
|
GB312161A
|
|
Improvements in film-feeding devices for cinematographic apparatus
|
|
GB311411A
|
|
Braking device for cinematograph reels
|
|
GB319201A
|
|
Improvements in or relating to cinematographic apparatus
|
|
GB308784A
|
|
Improvements in or relating to cinematographic apparatus
|
|
GB317459A
|
|
Improvements in acoustic films and in their methods of manufacture
|
|
GB303143A
|
|
Improvements in acoustic films and in their methods of manufacture
|
|
GB300235A
|
|
Improvements in methods and means for the screen projection of acoustic cinematographic films with continuous travel
|
|
GB297733A
|
|
Improvements in acoustic films and in their methods of manufacture
|
|
GB267125A
|
|
Improvements in or relating to continuous-feed cinematograph apparatus
|
|
GB263172A
|
|
Improvements in loud speaking devices
|
|
GB252002A
|
|
Improvements in electro-dynamic devices adapted for use as microphones or loud-speaking apparatus
|
|
GB245772A
|
|
Improvements in cinematographic apparatus with continuous motion of the film
|
|
GB236200A
|
|
Improvements in devices for the utilization of loud-speaking apparatus provided with diffusers
|
|
US1584170A
|
|
Loud-speaking electromagnetic receiver
|
|
GB210405A
|
|
Loud speaking telephone station
|
|
GB183437A
|
|
Improvements in systems of electro-mechanical control
|
|
GB180684A
|
|
Tele-compass with soft iron
|
