Click Here to Continue Viewing Current Query Results or Home to Start a New Query. Description: Here is a Just Whistle model razor with a case and two extra Atra cartridges. All plastic construction except for the blades. Manufacturer: Gillette Safety Razor Company, Boston, Mass. Type: Gillette Country: USA Patent: 3,518,110- 3,593,416- 3,724,070- 3,786,563- 4,026,018-4,083,104- 4,122,602- 3,829,969- D243638 Other patents pending. Comment: This model was called a self-adjusting razor. Source: e sinker Editors: