http://mikecaulfield.com/2007/08/07/first-35-claims-of-blackboards-patent-ruled-invalid/ Mostly edtech, w/ some politics and stylistics. By Mike Caulfield Wed, 08 Sep 2010 18:08:35 +0000 http://wordpress.org/?v=2.9.1 hourly 1 http://mikecaulfield.com/2007/08/07/first-35-claims-of-blackboards-patent-ruled-invalid/comment-page-1/#comment-71 BokyCindink Thu, 30 Oct 2008 00:44:45 +0000 http://mikecaulfield.com/2007/08/07/first-35-claims-of-blackboards-patent-ruled-invalid/#comment-71 A good way eh? Tell me about my deep guitar Do you want a joke? :) Why did the dinosaur cross the road? Because there were no chickens in those times. A good way eh? Tell me about my deep guitar Do you want a joke? Why did the dinosaur cross the road? Because there were no chickens in those times.

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