  Continuous symmetries generated with observables of a quantum theory in the
Minkowski spacetime are discussed. An example of an originated in this way
algebra of observables is the algebra of observables of the canonical quantum
theory, that is contained the Lorentz group algebra and the Heisenberg algebra
of phase space operators. In the general case commutation relations between
observables depend on c, h and additional fundamental constants. Free field
equations are considered, which are invariant with respect to generalized
kinematical symmetries of the quantum phase space.
