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Some info (and drawings of P.115N-1 and P.115C-4 ) in http://www.secretprojects.co.uk/forum/index.php/topic,6661.0.htmlPatent is http://www.google.com/patents?id=ySchAAAAEBAJ
Some info (and drawings of P.115N-1 and P.115C-4 ) in http://www.secretprojects.co.uk/forum/index.php/topic,6661.0.html
Patent is http://www.google.com/patents?id=ySchAAAAEBAJ
