Try this:
=FILTER(Tabelle1[Customer];(Tabelle1[Revenue Start]>=Tabelle3!A4)*(Tabelle1[Revenue End]<=Tabelle3!B4)*(Tabelle1[Owner]=WENN(Tabelle3!D4<>"";Tabelle3!D4;"*"));"")
Not tested, as your sample file is not complete enough to allow testing (no source data provided).
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