Thanks Maveric. I keep getting myself confused on the 203 vs 230. :-[
The Potez 220 was the eliptical-winged twin that I was trying to remember. The Potez 221 AB3 project must be a recce bomber development of the 220 (presumably with a glazed nose replacing the 220's ventral observation position).
from AFM 03 magazine,here is some patents for Stipa,and its variants,Model-201 & 202 was twin engined
civil aircraft and Model-203 was a twin engined military aircraft,the three engined was Model-301 & 302,
also the four engined was Model-401,402 & 403.