Ah!
I leeched this off another forum...
...from the German Patent and Trademark bureau...
D.R.P.u.A.P. (Deutsches Reichs-Patent und Auslandische Patente) (German Patent and Foreign Patents) Indicating patent registration in Germany and in foreign countries. Usually used on commercial items.
D.R.G.M. (Deutsches Reich Gebrauchsmuster) Not a patent, but a secondary protection for an item which by itself would not qualify for patent protection. As examples, Mauser held a D.R.G.M. on part of the HSc magazine catrch assembly; Walther had a D.R.G.M. their PP/PPK cleaning kits. Often found on German holsters.
D.R.P.D.R.G.M. As seen on a .22 German rifle, indicates that the basic part of the rifle was covered by a patent (D.R.P.) and that some other secondary feature was covered by a D.R.G.M.
Ges. Gesch. (Gesetzlich Geschutzt) A general, lesser legal notice that the item is protected by one or more of any number of legalities such as a D.R.G.M., trademark, design registration or copyright. Often seen on medals, decorations, pins, etc.
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