4. Electric lamp and discharge devices: systems
  5. Condenser in the supply circuit
  6. Condenser in shunt to the load device and the supply

Yoshio Yuasa

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Automatic focusing device for an enlarger

Photocopying – Projection printing and copying cameras – Focus or magnification control
Patent

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Color enlarger

Photocopying – Projection printing and copying cameras – Multicolor picture
Patent

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Color meter

Optics: measuring and testing – By shade or color – Photography
Patent

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Colorimeter

Optics: measuring and testing – By shade or color – Tristimulus examination
Patent

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Device for measuring light under ambient light and/or flash ligh

Optics: measuring and testing – Photometers – Photoelectric
Patent

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Profile ID: LFUS-PAI-P-27711

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