Click Here to Continue Viewing Current Query Results or Home to Start a New Query. Description: This ATRA razor includes the newer larger aluminum handle carded with a two extra cartridges and a handy storage tray. Called the Microsmooth Twin Blade Razor. Manufacturer: The Gillette Company, Safety Razor Division, Boston, Mass. Type: Gillette Country: USA Patent: 3,071,856; 3,518,110; 3,593,416; 3,724,070; 3,786,563; 3,829,969; 4,026,016; 4,083,104; 4,122,602 and D243,638; D245,460. Comment: ATRA featured the pivoting head. Originally ATRA was an acronym for Australian Test Razor but was utilized in 1977 as Automatic Tracking Razor. Source: e sinker Editors: