  We study Gorenstein ideals of codimension $4$ derived from generic doublings
of almost complete intersection perfect ideals of codimension $3$. We also
investigate spinor coordinates of such Gorenstein ideals with $8$ and $9$
generators. For an ideal $J$ of commutative ring $R$, the $R/J$ module $J/J^2$
is called conormal module and $R/J$-dual of $J/J^2$ is called normal module. We
study properties of conormal and normal modules of almost complete intersection
perfect ideals of codimension $3$.
