earnings for a patent grant and for highly-cited patents a longer-lasting premium of 30% in earnings three years later. Similar … medium-term premia accrue to inventors who initially hold the patent rights, although they forego earnings at the time of the …

's fairs between 1851 and 1915. Exhibition data show that the industry where an innovation is made is the single most important … patent. The discovery of the periodic table in 1869 offers an opportunity to test this idea. Exhibition data show that …