| http://www.w3.org/ns/prov#value | - r an extent approximately equal to a right angle.These hinges are not free from drawbacks, including the fact that they do not allow stable opening and closure and do not support the door sufficiently when it moves from the vertical position to a horizontal position in which the weight of thedoor itself acts particularly intensely on the hinges.Accordingly, one obtains a smaller-than-expected degr
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