The easiest way:
cleartool find . -type f -ele "version(.../myBranch/LATEST)" -print
cleartool find . -type f -ele "version(.../DEV_BRANCH/LATEST)" \
-exec "cleartool lsvtree \"%CLEARCASE_PN%\"" | findstr "DEV_BRANCH\\[0-9]* ("
( grep Unix), :
.
, , , ( ), ( ).
, ...