Click Here to Continue Viewing Current Query Results or Home to Start a New Query. Description: Du-Al Manufacturer: The DU-AL Company, 508 So. Dearborn St., Chicago, IL and A. G. Braun, 10417 Quito Lane. Beverly Glen. Blvd., Los Angeles, CA Type: Rollers-1 Country: USA Patent: US - 1027045(5/21/1912), 1132079(3/16/1915) Comment: Note the model differences. One has extra gearing with a setting for honing (H.) and stropping (S.). The adjusting lugs can be changed to allow for different blades. Du-Al 1 has additional lug positions (left model in photos). Source: twillard Editors: