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| Number | Title | Issue Date |
| 7147681 | Method and device for removing recoverable waste products and non-recoverable waste products Method and apparatus used in the field of waste management for utilizing recoverable waste products as efficiently as possible. The invention reduces the environmental impact of such a method to a minimum. The recoverable waste products and non-recoverable waste pro... | 12/12/2006 |
| 5507846 | Apparatus for producing methane-rich gas using a fixed kiln with rotor steam gasifier A gasifier for producing methane-rich fuel gas from a biomass material feed includes at least one cylindrical vessel, and an axially extending rotor mounted within the vessel. A feeding system is mounted to the vessel at the input end for introducing feed... | 04/16/1996 |
