Modular assistance device for users for walking up and down stairs, stair structure and method
The invention relates to a modular assistance device for users for walking up and down stairs, a stair structure and a method. The device comprises a step plate, the two ends of the step plate are each connected with one end of an elastic part, the other ends of the elastic parts are connected with...
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Format: | Patent |
Sprache: | chi ; eng |
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