ES25788A1 - Un aparato denominado "suelta-dedos marchisio", para acelerar la parte mecánica del estudio del piano y de otros instrumentos de música.
- Google Patents
Un aparato denominado "suelta-dedos marchisio", para acelerar la parte mecánica del estudio del piano y de otros instrumentos de música.
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ES25788A1900-04-051900-04-05Un aparato denominado "suelta-dedos marchisio", para acelerar la parte mecánica del estudio del piano y de otros instrumentos de música.
ExpiredES25788A1
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