Quanscan, Inc.

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Patent Activity in the Last 10 Years

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5009111 Differential force balance apparatusExpiredAug 31, 88Apr 23, 91[G01L, G01P]
4956817 High density data storage and retrieval systemExpiredMay 26, 88Sep 11, 90[G11C]

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