Procedure to produce a material for diazotypia. (Machine-translation by Google Translate, not legally binding)
ES328533A1
A procedure for the manufacture of diazotypy material revelable by heat. (Machine-translation by Google Translate, not legally binding)
ES314647A1
Improvements introduced in the preparation of perfected materials, of a single component. (Machine-translation by Google Translate, not legally binding)
ES288283A1
Improvements introduced in the manufacture of materials diazotype of a component (Machine-translation by Google Translate, not legally binding)
ES265445A1
Improvements introduced in the manufacture of diathypic paper of a component (Machine-translation by Google Translate, not legally binding)
