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Portable screen assembly

Optical: systems and elements – Projection screen
Reexamination Certificate

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Portable screen assembly

Optical: systems and elements – Projection screen – Roll up screen
Reexamination Certificate

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Portable screen assembly

Optical: systems and elements – Projection screen – Roll up screen
Reexamination Certificate

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Portable screen assembly for use with a projector

Optical: systems and elements – Projection screen
Patent

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Portable screen device

Optical: systems and elements – Projection screen – Roll up screen
Reexamination Certificate

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Portable screen device

Optical: systems and elements – Projection screen – Roll up screen
Reexamination Certificate

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Portable screen device

Optical: systems and elements – Projection screen – Roll up screen
Reexamination Certificate

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Portable screen device with dual shaft structure

Optical: systems and elements – Projection screen – Roll up screen
Reexamination Certificate

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Portable self-cleaning mirror apparatus and method

Optical: systems and elements – Protection from moisture or foreign particle
Patent

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Portable stereoscopic viewing apparatus

Optical: systems and elements – Stereoscopic – Stereo-viewers
Patent

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Portable telephone and automobile system

Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Reexamination Certificate

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Portable telescope mount with integral locator using...

Optical: systems and elements – Compound lens system – Telescope
Reexamination Certificate

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Portable telescope mount with integral locator using...

Optical: systems and elements – Compound lens system – Telescope
Reexamination Certificate

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Portable terminal and drive method for photographic optical...

Optical: systems and elements – Lens – With variable magnification
Reexamination Certificate

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Portable underwater viewer with magnifying capabilities

Optical: systems and elements – Optical aperture or tube – or transparent closure – Submerged object viewer
Patent

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Portable variable power zoom periscope

Optical: systems and elements – Compound lens system – Telescope
Reexamination Certificate

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Portable viewing apparatus

Optical: systems and elements – Stereoscopic – Stereo-viewers
Patent

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Portable viewing apparatus having multiple interchargeable optic

Optical: systems and elements – Binocular devices
Patent

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Portable visual display device with a collapsible...

Optical: systems and elements – Projection screen – Rear projection screen
Reexamination Certificate

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Portable wide-field optical system with microlenses and...

Optical: systems and elements – Single channel simultaneously to or from plural channels – By surface composed of lenticular elements
Reexamination Certificate

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