URI: 
       Index of /pdf/tandbergData/patents
       _______________________________
       
   DIR /pdf/tandbergData
       DE000003244149A1.pdf
       DE000003244165A1.pdf
       DE000003317719A1.pdf
       EP0190555B1.pdf
       US4438879.pdf
       US4476503.pdf
       US4489355.pdf
       US4491890.pdf
       US4609959.pdf
       US4622606.pdf
       US4636890.pdf
       US4639796.pdf
       US4679104.pdf
       US4761695.pdf
       US4780888.pdf
       US4803704.pdf
       US4845573.pdf
       US4866548.pdf
       US4868737.pdf
       US4870513.pdf