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 UID222315 帖子427 主题12 注册时间2011-7-2 最后登录2016-4-19 
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8#
 
 发表于 2013-4-8 19:08 
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| errm….A C: a patent doesn’t stop rivalry, it will increase it, they will attempt to lower costs, bring substitutes etc
 B: ifs its that great, and they really want it, they will pay. if there’s no substitutes, buyers bargaining powers decrease
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