PRISM ACQUISITION, INC.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5195227 Quick change mounting system for machine toolsExpiredJan 03, 91Mar 23, 93[B23Q]
4890514 Rotary indexing mechanismExpiredMar 09, 88Jan 02, 90[B23Q]
4787128 Modularly expandable integrated process machine system and rotary indexing mechanism thereforExpiredMay 18, 87Nov 29, 88[B23Q, B23P]
4740120 Thread tapping machine toolExpiredMar 14, 86Apr 26, 88[B23G]
4715113 Machine component installation deviceExpiredJul 02, 86Dec 29, 87[B23P, B65G]
4697318 Adaptable machining systemExpiredNov 26, 85Oct 06, 87[B23Q]
4697799 Support for precisely holding a workpieceExpiredMar 10, 86Oct 06, 87[B25B]

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