Bruce Nunnally Posted May 12, 2010 Report Share Posted May 12, 2010 Warren, Mich. -- More than half of the 1,300 patents filed by General Motors Co. in 2009 are green innovations, proof of the rapid development of groundbreaking technology by GM researchers and engineers. View the full article Bruce 2023 Cadillac CT4-V Blackwing Follow me on: Twitter Instagram Youtube Link to comment Share on other sites More sharing options...
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