Abstract
The analysis of the structural changes in the Spanish economy (1950–1960) has been undertaken using Schumpeterian models of innovation. As patent information plays an important role in technological development, this study has been based on the availability of a newly released data from the Spanish Patent and Trademark Office. This analysis has been specified by means of the development of indicators relating to the degree of concentration of innovative activity, the innovation size of companies, the level of instability, the technological growth rate, and the presence of foreign innovators. The results highlight the existence of typical technological factors intrinsic to the sectors of economic activity and invariants between countries.
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