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US Patent 8848132 Hollow backlight with structured films

Patent 8848132 was granted and assigned to 3M on September, 2014 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

88481320

Patent Inventor Names

Kenneth A. Epstein0

David G. Freier0

David J. Lamb0

Mark B. O'Neill0

Shandon D. Hart0

Date of Patent

September 30, 2014

Patent Application Number

128660940

Date Filed

February 6, 2009

Patent Citations Received

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US Patent 12117621 Control of reflections of a display device

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US Patent 12066717 Optical stack for switchable directional display

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US Patent 11668963 Directional display apparatus

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US Patent 11747693 Optical stack for switchable directional display

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US Patent 12013603 Pupillated illumination apparatus

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US Patent 11874576 Optical stack for privacy display

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US Patent 11874541 Directional display apparatus

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US Patent 11892718 Directional display apparatus

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Patent Primary Examiner

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Dennis Y Kim

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