The logo was adapted by the Quandt group and the same style as the DWM, NWM, Comet logos in later years. You also see it in the IWK and IWKA logos up to some years ago.
The design may also be a reference to DWM's Berlin-Borsigwalde building design with its (then) innovative curved roof design.
The Mauser banner, however, was first registered in 1919, the DWM banner in 1936. These registrations can be found with the Deutsches Patent und Markenamt (DPMA).
There may have been earlier registrations as per Sturgess, but I haven't found evidence of a pre 1919 registration.
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