DK6823C
(en)
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Device for artificial braids.
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DK6742C
(en)
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Apparatus for the Development of Piano Playing Finger Technique.
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DK9036C
(en)
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Apparatus for Stretching the Fingers for Facilitation of Piano Playing and the Like.
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DK6846C
(en)
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Apparatus for Threading Synaale.
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DK6714C
(en)
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Apparatus for Simultaneous Propagation of Several Bottles.
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DK6934C
(en)
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Apparatus for Multiplication Calculation.
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DK7544C
(en)
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Device for writing down pieces of music played on keyboard instruments.
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DK6544C
(en)
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Apparatus for Carburization of Air.
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CH34383A
(en)
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Apparatus for playing string instruments
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DK6261C
(en)
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Apparatus for generating sound vibrations in water.
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DK6901C
(en)
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Device for Increasing the Effect of Centrifuge Drums.
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CH32301A
(en)
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Blueprint apparatus
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DK7111C
(en)
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Apparatus for Saturating Liquid with Gases.
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DK5656C
(en)
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Apparatus for Carburization of Gases.
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DK6415C
(en)
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Device for Pianos.
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DK5758C
(en)
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Gas Production Apparatus.
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DK6240C
(en)
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Apparatus for the manufacture of brick walls.
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AT27666B
(en)
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Electrolytic apparatus.
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DK6759C
(en)
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Apparatus for Evaporation of Liquids.
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DK6896C
(en)
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Procedure and Apparatus for Washing Filter Mass.
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DK9196C
(en)
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Music register for automatic musical instruments and device for the production of the same.
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DK14415C
(en)
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Procedure and Apparatus for Recording Musical Piano Performances.
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DK6345C
(en)
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Apparatus for Cleaning Windows.
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AT23610B
(en)
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String instrument.
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DK6881C
(en)
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Apparatus for Cleaning Sewage Wells.
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