"The Cross-country Historical Adoption of Technology (CHAT) dataset ... is an unbalanced panel dataset with information on the adoption of over 100 technologies in more than 150 countries since 1800. The data is available for download at: http://www.nber.org/data/chat." (Cited from the abstract of Comin and Hobijn 2009).
For details, see Comin and Hobijn (2009).
Also see Diego Comin's website for the data and the documentation.