robothut Posted May 30, 2010 Share Posted May 30, 2010 Patent applided for in 1976 and granted in 1978. Link to comment Share on other sites More sharing options...
robothut Posted May 30, 2010 Author Share Posted May 30, 2010 more. Link to comment Share on other sites More sharing options...
robothut Posted May 30, 2010 Author Share Posted May 30, 2010 more. Link to comment Share on other sites More sharing options...
robothut Posted May 30, 2010 Author Share Posted May 30, 2010 more. Link to comment Share on other sites More sharing options...
robothut Posted May 30, 2010 Author Share Posted May 30, 2010 more. Link to comment Share on other sites More sharing options...
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