ES30621A1 - Mejoras introducidas en los aparatos empleados para limitar el movimiento o avance de las tiras o cintas de metal cartón, papel o semejantes.
- Google Patents
Mejoras introducidas en los aparatos empleados para limitar el movimiento o avance de las tiras o cintas de metal cartón, papel o semejantes.
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ES30621A1902-11-071902-11-07Mejoras introducidas en los aparatos empleados para limitar el movimiento o avance de las tiras o cintas de metal cartón, papel o semejantes.
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Un procedimiento perfeccionado para la perforación de las tiras o fajas de papel o de otras materias, aplicables a los aparatos neumáticos para tocar el piano.