4. Optical: systems and elements
  5. Extended spacing structure for optical elements
  6. Extension of tubular element adjustable

John A Wheatley

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Infrared selective reflective polarizing element

Optical: systems and elements – Polarization without modulation – By relatively adjustable superimposed or in series polarizers
Reexamination Certificate

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Light valve with rotating polarizing element

Optical: systems and elements – Extended spacing structure for optical elements – Extension of tubular element adjustable
Patent

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Profile ID: LFUS-PAI-P-1030023

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