I
| No. | Town | Firms | Initials | Years | |
|---|---|---|---|---|---|
| 01. | Basel | I | 1922 | Pic | |
| 02. | St. Gallen | I.D. Eisenstein & Co AG | I.D.E/&Co. | 1909 - 1938 | Pic |
| 03. | Zurich | International Harvester Company AG | IHC (weave) | 1932 - 1948 | Pic |
| 04. | Geneve | International Harvester Company | IHC (weave) | 1932 - 1943 | Pic |
| 05. | Zurich | III | 1913 | Pic | |
| 06. | La-Chaux-de-Fonds | Cie. De montres Invar (+ Achille Hirsch & fils) | INVAR | 1903 - 1909 | Pic |
| 07. | Zug | "Ideal" Radiatoren Gesellschaft AG | IR (weave) | 1932 - 1964 | Pic |
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Last update 2015.09.25
