ResultFeatures, when got from Patterns, are workplanes, workpoints, worksurfaces which are created when the Pattern is created.
CComPtr <ObjectsEnumerator> pObjectsEnumerator ;
pFeaturePatternElement->get_ResultFeatures (&pObjectsEnumerator) ;
const int ikNumObj = pObjectsEnumerator->GetCount () ;
ResultFeatures are the result of creating a pattern with some features. You often use them for getting proxies of the features. Result Features are of the type ObjectsEnumerator, a list of objects.
Graphically:
Here is a fragment which gets