▁the ▁Radio ▁Fly er ▁and ▁Hav oline ▁Th erm ometer ▁buildings . ▁ ▁He ▁went ▁on ▁to ▁open ▁I annel li ▁Studios ▁in ▁Park ▁R idge , ▁Illinois , ▁in ▁collaboration ▁with ▁his ▁wife ▁Margaret , ▁a ▁tal ented ▁illustr ator ▁and ▁artist ▁in ▁her ▁own ▁right . ▁I annel li ▁Studios ▁grew ▁to ▁become ▁one ▁of ▁Chicago ' s ▁most ▁famous ▁art ▁stud ios ▁at ▁the ▁time . ▁They ▁included ▁more ▁collabor ators ▁and ▁expanded ▁into ▁commercial ▁design , ▁advert ising , ▁product ▁design , ▁and ▁architect ural ▁inter iors . ▁ ▁Among ▁I annel li ' s ▁most ▁famous ▁industrial ▁designs ▁are ▁the ▁Stream line ▁Mod erne - in sp ired ▁C - 2 0 ▁" C off e em aster " ▁vac u um ▁co ffe em aker ▁and ▁T - 9 ▁electric ▁to aster ▁for ▁Sun be am ▁Product s , ▁which ▁the ▁company ▁introduced ▁as ▁its ▁flags hip ▁modern ▁app li ances ▁in ▁honor ▁of ▁the ▁ 1 9 3 9 ▁New ▁York ▁World ' s ▁Fair . ▁I annel li ▁also ▁designed ▁many ▁significant ▁inter iors ▁for ▁churches ▁and ▁movie ▁the aters , ▁two ▁of ▁which ▁remain ▁in ▁operation ▁today : ▁the ▁Pick wick ▁Theater ▁in ▁Park ▁R idge ▁and ▁the ▁Cat low ▁Theater ▁in ▁Bar r ington , ▁Illinois . ▁He ▁also ▁designed ▁the ▁large - scale ▁Rock ▁of ▁Gib ral tar ▁relief ▁on ▁the ▁fac ade ▁of ▁the ▁Pr ud ential ▁Building ▁( now ▁called ▁One ▁Pr ud ential ▁Pla za ) ▁in ▁Chicago .