REMOVABLE STAIRS FOR DEVICE OR THE LIKE GOING UP AND DOWN THE STAIRS WITH LATERAL SETS OF WHEELS FITTED TO FOUR TIPS OF ROTATING FRAME OF CRUCIFORM

摘要

PROBLEM TO BE SOLVED: To go up and down the stairs without performing dangerous, unsafe action folding up and down an object.

SOLUTION: The removable stairs is provided for a device or the like going up and down the stairs with lateral sets of wheels fitted to four tips of a rotating frame of cruciform.

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