AMMANN LASERTECHNIK AG

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5436768 Laser beam receiversExpiredJul 02, 93Jul 25, 95[G01B]
5347136 Conduit construction laser system and laser beam receiverExpiredNov 10, 92Sep 13, 94[H01J]
5319187 Laser beam receivers and canal building laser devicesExpiredJul 02, 93Jun 07, 94[G01J]
5148018 Laser beam levelling deviceExpiredMar 21, 91Sep 15, 92[G01D]
4854703 Laser beam levelling instrumentsExpiredJan 04, 88Aug 08, 89[G01C]
4751782 Laser beam levelling instrumentsExpiredDec 11, 86Jun 21, 88[G01C, G01B]

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