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| Number | Title | Issue Date |
| 6953814 | Natural insect repellant A topical insect repellent with extended duration of protection was obtained from mixtures of molecules based on two or more volatile repellent organic molecular species occurring naturally on the human skin surface. The novel repellent comprises mixtures of lower, ... | 10/11/2005 |
| 6444216 | Natural insect repellent A topical insect repellent with extended duration of protection was obtained from mixtures of molecules based on two or more volatile repellent organic molecular species occurring naturally on the human skin surface. The novel repellent comprises mixtures... | 09/03/2002 |
| 6306415 | Natural insect and arthropod repellent A topical insect repellent with extended duration of protection was obtained from mixtures of molecules based on two or more volatile repellent organic molecular species occurring naturally on the human skin surface. The novel repellent comprises mixtures... | 10/23/2001 |
