U.S. Patent No. 4,623,371, 4,680,042, 4,883,514, 4,832,718, 5,224,350, 5,462,583, 5,551,972.
Copyright © 2004 by Advanced Extraction Technologies, Inc. All rights reserved.
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U.S. Patent No. 4,623,371, 4,680,042, 4,883,514, 4,832,718, 5,224,350, 5,462,583, 5,551,972.
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