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| Number | Title | Issue Date |
| 6440438 | Covering impregnated with insecticide A covering for soft furnishing is impregnated with an insecticide, such as permethrin. The concentration of permethrin is sufficient to kill house dust mites and deter larger insects such as fleas and ticks. The insecticide is released from the covering o... | 08/27/2002 |
