4. Photography
  5. Having variable focal length of camera objective
  6. Having focus operation

Takayuki Tsuboi

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Apparatus adapted to use solar battery

Batteries: thermoelectric and photoelectric – Photoelectric – Cells
Patent

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Apparatus having a battery-saving feature

Photography – With power supply detail – Having nonelectrochemical power source
Patent

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Automatic status discriminator

Patent

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Brake device for motor in camera

Electricity: motive power systems – Motor-reversing – Armature or primary circuit control
Patent

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Camera

Patent

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Profile ID: LFUS-PAI-P-200918

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