An attorney who has appeared in a criminal case may
thereafter withdraw only upon notice to the defendant and all
parties and upon an order of court finding that good cause exists
and granting leave to withdraw. Until such leave is granted, the
attorney shall continue to represent the defendant until the case
is dismissed, the defendant is acquitted, or, if convicted, the
time for making post-trial motions and for filing notice of
appeal, as specified in Fed. R. App. P. 4(b), has expired, and
until counsel has satisfied the requirements of Fed. R. App. P.
3.
