4. Land vehicles
  5. Step or abutment ascending type vehicle
  6. Jack-type attachment

Paul R. Gehlsen

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Apparatus for moving a wheelchair over stepped obstacles

Land vehicles – Step or abutment ascending type vehicle – Jack-type attachment
Patent

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Differential positive feed mechanism

Cutting by use of rotating axially moving tool – Processes – Bit detachable
Reexamination Certificate

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Method for moving a wheelchair over stepped obstacles

Land vehicles – Step or abutment ascending type vehicle – Jack-type attachment
Patent

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Profile ID: LFUS-PAI-P-696911

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