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Variation of speed following an ovoid course
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Waterproof swiveling electric cord slip coupling connector
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Collective vertical elevation equipment with human propulsion.
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Device for propulsion and safety elevator
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Nacelle with motor vehicle propulsion and safety mechanism
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Secure working device
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Mobile shelf for ladder with handles and safety harnesses
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Climbing system without rungs has steps that slide along guide rails and are locked by cam and lever mechanisms
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System for heat-shrinking a plastic envelope over a palletised load
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Disposable bag mounting for a lawn mower
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