H. Lorentz
Stettin, Pomerania, Prussia (now Szczecin, West Pomeranian Voivodeship, Poland)
Hersteller / Manufacturer
Known dates: pre 1918
Reference:
German Imperial Eagle of the German Empire 1871 - 1918, & D.R.P. (Deutsches Reichspatent)) 30968
D.R.P. (Deutsches Reichspatent)) 30968 
Pressed glass stein with unique hinge arrangement 
D.R.P. (Deutsches Reichspatent)) 30968 is marked on both the stein body and the Lid (thumbpull) indicating that neither individual item is patented, rather the assembly, or more specifically the hinge arrangement, where a squared loop of wire is forced into a slot on a glass lug on the side of the stein, forming a hinge. 