|Note_it=Pubblicizza le varie versioni del modello [[Advertised Model::Duofold]]. {{RightPage|File:1929-09-Parker-Duofold-Left.jpg}}
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|Note_it=Pubblicizza le varie versioni del modello [[Advertised Model::Duofold]]. Cita il [[Advertised Feature::Pressureless Touch]] e la [[celluoide]] chiamata [[Advertised Feature::Permanite]]. {{RightPage|File:1929-09-Parker-Duofold-Left.jpg}}
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|Note_en=Advertising for the different versions of the [[Duofold]] model. Right page.
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|Note_en=Advertising for the different versions of the [[Duofold]] model. Citing [[Advertised Feature::Pressureless Touch]] and the [[celluloid]] called [[Permanite]]. Right page.