A device applicable to calculating machines, through the cúal is avoided that a certain number of units, tens, centenas, etc., pass the total to be enrolled
ES161959A1
A device by which the turnover of certain wheels is applicable to applicable machines to add, reset calculate and analogue
ES161924A1
A mechanism applicable to machines to add, remain, calculate and analogue, through which can not write numbers
ES161753A1
Improvements introduced in the keyless locks, with call device and automatic registration
ES161138A1
An automatic ignition lighter
ES148073A1
A procedure that allows to train the writing machines, continuous vertical lines
ES119858A1
A chemical procedure to make photographic images invulnerable.
ES119798A1
A procedure for the sensitization of chemical-photographic papers.
ES119729A1
Improvements in refractive means of headlights for automobiles.
ES119228A1
A chemical-photographic procedure for obtaining documents that require identification.
ES118482A1
A procedure to make documents chemically invulnerable in their writings.
ES118443A1
A chemical procedure for checking the legitimacy of documents.
ES115486A1
A system of mechanical displacement itineraries.
ES112916A1
A device for limited water discharges.
ES112729A1
A photographic chemical procedure for documents that require identification.
