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Pendulum structure

Motors: spring – weight – or animal powered – Weight – Oscillating
Patent

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Portable fluid recovery system and method of use

Motors: spring – weight – or animal powered – Composite – Weight only
Reexamination Certificate

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Positioning rotary actuators

Motors: spring – weight – or animal powered – Spring
Reexamination Certificate

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Power generating apparatus

Motors: spring – weight – or animal powered – Weight – Oscillating
Patent

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Power generating apparatus

Motors: spring – weight – or animal powered – Animal powered – Sweep type
Patent

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Power source device

Motors: spring – weight – or animal powered – Spring – With winding means
Reexamination Certificate

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Power spring drive apparatus

Motors: spring – weight – or animal powered – Spring – With winding means
Patent

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Power transmission device

Motors: spring – weight – or animal powered – Weight – Oscillating
Patent

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Power unit

Motors: spring – weight – or animal powered – Composite – Spring only
Patent

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Power-loop apparatus and method

Motors: spring – weight – or animal powered – Weight – With weight raising means
Reexamination Certificate

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Powered toy boat

Motors: spring – weight – or animal powered – Animal powered – Belt tread
Patent

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Pull-back windup type spring drive unit

Motors: spring – weight – or animal powered – Spring – With winding means
Patent

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