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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5796620 Computerized system for lost foam casting process using rapid tooling set-upExpiredFeb 03, 95Aug 18, 98[G06F]
5062470 Method and apparatus for treating gaseous material from evaporative pattern castingExpiredMar 28, 90Nov 05, 91[B22D]
5012857 Molding medium, method for making same and evaporative pattern casting processExpiredJul 08, 86May 07, 91[B22C]
4947923 Method and apparatus for evaporative pattern castingExpiredApr 14, 88Aug 14, 90[B22C]
4651798 Molding medium, method for making same and evaporative pattern casting processExpiredSep 17, 84Mar 24, 87[B22C]
4368984 Mixer apparatusExpiredDec 12, 77Jan 18, 83[B22C]
4190369 Method and apparatus for making moldsExpiredJul 14, 78Feb 26, 80[B28C]

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