The following are patent or copyright marks, NOT makers marks**.
Musterschutz. (Trademark or Design Protection.)
Gengen Nachbildung Geschützt (Protected against copying)
Gesetzlich Geschützt (Protected by Law, Copyrighted or Patented)
Geschützt (Protected by law)
D.R.G.M. Deutsches Reich Gebrauchsmuster. (German Reich Registered Design) - Pre 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 Reichpatent. (German Reich Patent) - Pre 1949
D.B.P. Deutsches Bundespatent. (German Federal Patent) - Post 1949
DEP / Déposé. Modèle Déposé Française (French registered design)
** 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 maximum term of a Gebrauchsmuster is ten years from the
date of registration, but a Patent usually has a term of twenty years from the date of registration.