This application is a continuation of U.S. patent Ser. No. 09/303,091, filed Apr. 29, 1999 now U.S. Pat. No. 6,391,670.
This invention was made with government support under Contract No. DABT63-97-C-0001 awarded by the Defense Advanced Research Projects Agency (DARPA). The government has certain rights in this invention.
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Number | Date | Country | |
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Parent | 09/303091 | Apr 1999 | US |
Child | 10/071440 | US |