Not sure if this belongs here, so feel free to move this, or punish me severely for misposting. Here is something I just came upon that illustrates one of the items in the Borde Patent literature in the flesh (or metal) so to speak. This is the first Borde Feldflaschen-Kocher that I have seen in actuality, designed for use with the standard Swiss Army canteen and cup. According to the patent documents, this device was designed to be used only with "Hartspiritustabletten" or the equivalent of META or other solid fuel tablets. 2 kinds of Swiss Army canteens are illustrated, the brown enameled unit being a much earlier style, but essentially the same in function. Indeed, this Borde cooker differs slightly from the patent in that it includes a metal bracket/handle used to support the early style of canteen cup that does not have the folding wire handles. The bracket folds neatly under the cooker when not in use, and the canteen and cup nestle inside, secured by the side screw. Hope this sheds some light on the various cooking devices developed by Herr Borde, as I know there has been some lively discussion on the subject in the past. I'll add some better photos once I get my camera working again!