Who invented Stealth? Court revives 1996 suit against Pentagon

After 20 years, a St. Louis company may finally get its chance to try to prove that the Pentagon used its technology to make stealth combat aircraft stealthy without paying for it. An appeals court on Friday revived a patent-infringement suit that Zoltek Corp. first filed in March 1996. The court said a judge erred in ruling the patent invalid, and ordered a hearing on whether the F-22 fighter plane and B-2 bomber used a Zoltek invention.

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