WASTECH INTERNATIONAL, INC.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6517711 Waste treatment systemExpiredOct 01, 99Feb 11, 03[B01D]
6156192 Waste treatment systemExpiredAug 20, 96Dec 05, 00[C02F]
6132600 Filtration and treatment systemExpiredJul 20, 98Oct 17, 00[B01D]
5853579 Treatment systemExpiredNov 26, 96Dec 29, 98[C02F, B01D]
5843304 Filtration and treatment systemExpiredMay 22, 95Dec 01, 98[B01D]
5725762 Separation treatment systemExpiredMay 22, 95Mar 10, 98[C02F]
5447630 Materials treatment process and apparatusExpiredApr 28, 93Sep 05, 95[C02F]
D356624 Waste separatorExpiredMar 23, 93Mar 21, 95[]

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