DK18385C
(en)
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Apparatus for apparatus for mechanical reproduction of music and the like.
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DK25937C
(en)
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Device for gramophones and similar voice machines.
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DK20777C
(en)
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Apparatus for mounting the sound box by gramophones, phonographs and similar apparatus.
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DK18548C
(en)
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Apparatus for recording and recording sound.
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DK20487C
(en)
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Device for self-marking sliding discs and the like.
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DK16942C
(en)
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Apparatus for recording pieces of music on paper tapes and the like.
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DK28813C
(en)
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Procedure for the production of originals for photomechanical reproduction for various purposes and in particular for sheet music.
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DK18128C
(en)
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Procedure and Apparatus for the Production of Various Hard and Durable X-Rays.
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DK17791C
(en)
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Procedure for recording and reproducing tones.
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FR476352A
(en)
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Music turntable
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DK19007C
(en)
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Moldstones for Drying Walls and the like.
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DK14694C
(en)
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Device for stoves and the like.
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DK23140C
(en)
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Device for amplification and reproduction of sound waves.
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DK19606C
(en)
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Apparatus for reproducing and transmitting sound.
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DK28212C
(en)
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Device for underwater sound devices.
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DK19615C
(en)
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Device for obtaining synchronous reproduction of pieces of music adapted for cinematographic screenings.
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DK19266C
(en)
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Apparatus for Treatment of Sewage and the like.
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DK14415C
(en)
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Procedure and Apparatus for Recording Musical Piano Performances.
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DK28602C
(en)
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Device for Underwater Audio Devices.
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DK19830C
(en)
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Audio box or similar for Gramophones, Phonographs and similar Devices.
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DK22936C
(en)
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Procedure for the Manufacture of Xylolite from Magnesia and Magnium Salt.
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ES57536A1
(en)
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Phonograph improvements.
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DK30060C
(en)
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Amplifier and Generator of uninterrupted electrical oscillations.
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DK19133C
(en)
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Procedure for the manufacture of refractory products of quartz and the like.
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DK20731C
(en)
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Procedure for tanning and at the same time pre-cleaning of the tanning substance.
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