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Poynder, R.: Patent information for the masses (1997)
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White, M.J.: Patents and patent searching (2009)
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Poynder, R.: Patent information on the Internet (1998)
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Grunder, R.: Project support for patent information centres in North Rhine Westphalia, Germany (1999)
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Lambert, N.: But what's in it for IBM? : 'free' patents on the Net (1997)
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