The following are patent or copyright marks, NOT makers marks**.
Musterschutz. (Trademark or Design Protection.)
Gegen Nachbildung Geschützt (Protected against copying)
Gesetzlich Geschützt (Protected by Law, Copyrighted or Patented)
Geschützt (Protected by law)
D.R.G.M. Deutsches Reichs-Gebrauchsmuster. (German Reich Registered Design) - awarded from 1891 to 1949
D.B.G.M. Deutsches Bundes-Gebrauchsmuster. (German Federal Registered Design) - Post 1949
DEP Deponert / Deponiert (Copyright - replaced after the 1874 Reichs-Markengesetz)
D.R.P. Deutsches Reichspatent. (German Reich Patent) - Pre 1949
D.B.P. Deutsches Bundespatent. (German Federal Patent) - Post 1949
DEP / Déposé. Modèle Déposé Française (French registered design)
D.P. Deutsches Patent (German Patent)
D.P. Angem. Deutsches Patent Angemeldet (German Patent Filed (Patent Pending)
** Certain makers however are only identified by known D.R.G.M or Mustershutz marks which were used instead of maker's marks. The Gebrauchsmuster is slightly different from the Patent, in that processes and methods cannot be protected by a Gebrauchsmuster, whereas products can. Furthermore, the initial term of a Gebrauchsmuster is three years (extendable)
from the date of registration, but a Patent usually has a term of twenty years from the date of registration.