Ramtek Corporation

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5126747 Method and apparatus for displaying radar dataExpiredOct 31, 89Jun 30, 92[G01S]
4730261 Solids modelling generatorExpiredApr 06, 87Mar 08, 88[G06F]
4698746 Multiprocessor communication method and apparatusExpiredMay 25, 83Oct 06, 87[G06F]
4667306 Method and apparatus for generating surface-fill vectorsExpiredOct 25, 83May 19, 87[G06F]
4646262 Feedback vector generator for storage of data at a selectable rateExpiredJan 23, 86Feb 24, 87[G06F]
4504160 Color printer and multi-ribbon cartridge thereforExpiredApr 22, 82Mar 12, 85[B41J]
4403874 Color printer and multi-ribbon cartridge thereforExpiredMar 25, 80Sep 13, 83[B41J]
4215867 Targets and gated firing guns for propelling balls theretoExpiredMay 04, 79Aug 05, 80[F41B]
4185824 Ball launcher with finger spin loadingExpiredJul 11, 77Jan 29, 80[F41F, A63B]

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