4. Optical: systems and elements
  5. Projection screen
  6. Unitary sheet comprising plural refracting areas

Daniel W. Hennen

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Fresnel lens for projection screen

Optical: systems and elements – Projection screen – Unitary sheet comprising plural refracting areas
Reexamination Certificate

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Fresnel lens for projection screens

Optical: systems and elements – Lens – With multipart element
Reexamination Certificate

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Process of stripe coating to produce microstructured...

Plastic and nonmetallic article shaping or treating: processes – Optical article shaping or treating – Continuous or indefinite length
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2502378

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