  We construct differential calculi on multiparametric quantum orthogonal
planes in any dimension N. These calculi are bicovariant under the action of
the full inhomogeneous (multiparametric) quantum group ISO_{q,r}(N), and do
contain dilatations.
  If we require bicovariance only under the quantum orthogonal group
SO_{q,r}(N), the calculus on the q-plane can be expressed in terms of its
coordinates x^a, differentials dx^a and partial derivatives \partial_a without
the need of dilatations, thus generalizing known results to the multiparametric
case. Using real forms that lead to the signature (n+1,m) with m = n-1, n, n+1
, we find ISO_{q,r}(n+1, m) and SO_{q,r}(n+1,m) bicovariant calculi on the
multiparametric quantum spaces. The particular case of the quantum Minkowski
space ISO_{q,r}(3,1)/SO_{q,r}(3,1) is treated in detail.
  The conjugated partial derivatives \partial_a* can be expressed as linear
combinations of the \partial_a. This allows a deformation of the phase-space
where no additional operators (besides x^a and p_a) are needed.
