4. Games using tangible projectile
  5. Playing field or court game; game element or accessory...
  6. Practice or training device

William C. Cleveland

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Electro-optical IFF system

Communications: directive radio wave systems and devices (e.g. – Radar transponder system – Iff or sif
Patent

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Method and apparatus for interactive tennis practice

Games using tangible projectile – Playing field or court game; game element or accessory... – Practice or training device
Patent

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Profile ID: LFUS-PAI-P-162445

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