4. Optical: systems and elements
  5. Projection screen
  6. Curved

Donald L. Updyke, Jr.

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Simulated ball movement game using a trackball with an air...

Amusement devices: games – Including means for processing electronic data – Player-actuated control structure
Reexamination Certificate

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Video gateway having movable screens

Optical: systems and elements – Projection screen – Curved
Patent

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Profile ID: LFUS-PAI-P-542880

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