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Stair-climbing wheel utilizing an involute curve configuration

Land vehicles – Step or abutment ascending type vehicle – With spider-type engaging means
Patent

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Stair-climbing wheelchair

Land vehicles – Step or abutment ascending type vehicle – Relatively movable running gear portions
Patent

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Stair-climbing wheelchair

Land vehicles – Step or abutment ascending type vehicle – Relatively movable running gear portions
Patent

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Stair-climbing wheelchair carrier

Land vehicles – Step or abutment ascending type vehicle – With endless track
Reexamination Certificate

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Stair-climbing wheelchair carrier

Land vehicles – Step or abutment ascending type vehicle – With endless track
Reexamination Certificate

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Stairway accessible carry cart with foldaway wheels

Land vehicles – Step or abutment ascending type vehicle – With spider-type engaging means
Patent

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Stairway ascending/descending vehicle having an arm member with

Land vehicles – Step or abutment ascending type vehicle – Relatively movable running gear portions
Patent

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Step climbing wheelchair

Land vehicles – Step or abutment ascending type vehicle
Reexamination Certificate

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Stroller assembly

Land vehicles – Step or abutment ascending type vehicle – With spider-type engaging means
Reexamination Certificate

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Suspension arrangement for a wheeled conveyance

Land vehicles – Step or abutment ascending type vehicle
Reexamination Certificate

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