DE179729C
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DE709118C
(de )
1941-08-06
Vorrichtung zum Veraendern der Spannung der Typenhebelrueckzugfedern an Schreibmaschinen
DE235899C
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DE173044C
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AT39766B
(de )
1909-11-25
Einrichtung an Tasteninstrumenten zum mechanischen Spielen derselben mittels Walzen oder dergl.
DE99901C
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DE207965C
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DE201802C
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DE99479C
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DE213089C
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DE129430C
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DE154572C
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1900-01-01
DE113793C
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DE322029C
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1920-06-18
DE645653C
(de )
1937-06-01
Einstellbarer Unterbrecher
DE137286C
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DE503548C
(de )
1930-07-24
Einrichtung an Orgelpfeifen zur AEnderung der Tonstaerke
DE83836C
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1900-01-01
DE151747C
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DE90593C
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DE40564C
(de )
Pianino - Mechanik
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DE211149C
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DE80586C
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