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Optical apparatus

Electricity: motive power systems – Automatic and/or with time-delay means – With nonautomatic control means
Reexamination Certificate

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Optical control system for elevators

Electricity: motive power systems – Automatic and/or with time-delay means – Speed or rate-of-movement
Patent

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Optical encoder

Electricity: motive power systems – Automatic and/or with time-delay means – Radiant energy
Patent

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Optical pickup moving mechanism

Electricity: motive power systems – Automatic and/or with time-delay means – Motor load – armature or primary or secondary circuit current
Patent

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Oscillation reducing apparatus for rotary compressor

Electricity: motive power systems – Automatic and/or with time-delay means – Sound – supersonic vibration or mechanical vibration
Patent

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Overload protection system for an electrical device

Electricity: motive power systems – Automatic and/or with time-delay means – Responsive to thermal conditions
Reexamination Certificate

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Overtemperature warning cycle in operation of polyphase DC motor

Electricity: motive power systems – Automatic and/or with time-delay means – Responsive to thermal conditions
Patent

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