ES580A1 - Procedimiento que modificando la fabricación del papel y pergamino, hace descubrir a la simple vista, las raspaduras de lo escrito.
- Google Patents
Procedimiento que modificando la fabricación del papel y pergamino, hace descubrir a la simple vista, las raspaduras de lo escrito.
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Heckmann Napoleon Joseph
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Heckmann Napoleon Joseph
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Application filed by Heckmann Napoleon JosephfiledCriticalHeckmann Napoleon Joseph
Priority to ES580ApriorityCriticalpatent/ES580A1/es
Publication of ES580A1publicationCriticalpatent/ES580A1/es
ES580A1879-10-041879-10-04Procedimiento que modificando la fabricación del papel y pergamino, hace descubrir a la simple vista, las raspaduras de lo escrito.
ExpiredES580A1
(es)