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Clean energy patents set record in 2009 (access required)

By Tom Wanamaker
Posted: 6:23 pm Wed, March 10, 2010

The number of U.S. clean energy technology patents reached an all-time high in 2009. Last year, 1,125 such patents were granted by the U.S. Patent and Technology Office, topping 2008’s total by 200.

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