4. Illumination
  5. Light source and modifier
  6. Adjustable or repositionable light source or light source...

Alfred J. Henderson, Jr.

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Device for measuring lighting effectiveness

Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Patent

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Lamp support device

Illumination – Light source and modifier – Adjustable or repositionable light source or light source...
Patent

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Luminaire reflector mounting for rotation of asymmetric reflecto

Illumination – Light source and modifier – Adjustable or repositionable modifier
Patent

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Reflector lamp

Illumination – Light source and modifier – Including reflector
Patent

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Profile ID: LFUS-PAI-P-56331

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