Holmén, Magnus; Jacobsson, Staffan A - DRUID, Copenhagen Business School, Department of … - 1998
close scrutiny of both patent classes and patents, the actors in the new classes, as well as in the original class, are then …, aimed to make a methodological contribution to the literature, which has emerged on the systemic nature of innovation. The … method involves broadening out from a starting point in a specific patent class, which corresponds as closely as possibly to …