TY - RPRT T1 - Appropriability Mechanisms, Innovation and Productivity: Evidence from the UK UR - https://doi.org/10.3386/w20514 PY - 2014/09/01 AU - Hall B AU - Sena V ED - DO - DOI: 10.3386/w20514 PB - National Bureau of Economic Research Y2 - 2025/12/01 ER -