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GB191220659A
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Electric Lamp for Light Projections.
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GB191219854A
|
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Indicating Device for the Insertion of Films in Cinematographic Projecting Apparatus.
|
|
GB191206289A
|
|
Method of Mixed Perforation for Cinematographic Films.
|
|
GB191206104A
|
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Improvements in Cinematographic Projecting Apparatus Providing their Own Light.
|
|
GB191203048A
|
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Cinematographic Projecting Apparatus.
|
|
GB191121690A
|
|
Improvements in and relating to Toothed Film Operating Drums of Cinematographic Apparatus.
|
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GB191102500A
|
|
Improvements in Cinematographic Films with Central Coating of Emulsion.
|
|
GB191027785A
|
|
Improvements in the Suspension of Films, Perforated or not, in Drying Arrangements.
|
|
GB191027784A
|
|
An Improved Arrangement for Adjusting in Correct Position the Pictures of Cinematographic Films.
|
|
GB190708377A
|
|
Improvements in Sound Reproducing Apparatus for Phonographs and other Talking Machines.
|
|
GB190611762A
|
|
Improvements in and relating to Cinematograph Films.
|
|
GB190523115A
|
|
Improvements in and relating to Supports for Phonographic Plates of all kinds
|
|
GB190523116A
|
|
Improvements in the Manufacture of Positive Phonographic Plates for Talking Machines.
|
|
GB190312150A
|
|
Improvements in and relating to Phonographs
|
|
GB190312151A
|
|
Improvements in and relating to Phonographs.
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