4. Illumination
  5. Illuminated scale or dial
  6. Edge illuminated modifier or light rod/pipe

Alps Electric Co. ,Ltd.

Corporate Assignee

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2-stage differential amplifier connected in cascade

Amplifiers – With semiconductor amplifying device – Including differential amplifier
Patent

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A push-button switch with uniform on and off timings

Electricity: circuit makers and breakers – Solid contact – Push button operated
Patent

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Absolute angle detecting device

Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Reexamination Certificate

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Absolute angle detecting device

Geometrical instruments – Miscellaneous – Light direction
Reexamination Certificate

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Active low-pass filter

Amplifiers – Signal feedback – In cascade amplifiers
Reexamination Certificate

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Profile ID: LFUS-PAI-P-3155568

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