4. Electricity: measuring and testing
  5. A material property using electrostatic phenomenon

Donald L. Cullen

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Active and passive holographic optical based curved surface...

Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Reexamination Certificate

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Active and passive holographic optical based curved surface...

Optical: systems and elements – Holographic system or element
Reexamination Certificate

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Aluminum flake mulch

Plant husbandry – Mulching
Patent

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Diffractive display

Optical: systems and elements – Diffraction – From grating
Reexamination Certificate

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Diffractive display

Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Reexamination Certificate

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