AT840BAT840DAAT840BAT 840 BAT840 BAT 840BAT 840D AAT840D AAT 840DAAT 840 BAT840 BAT 840B
Authority
AT
Austria
Application number
Inventor
Louis Hermann Ludwig
Eduard Pfefferkorn
Original Assignee
Louis Hermann Ludwig
Eduard Pfefferkorn
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Filing date
Publication date
Application filed by Louis Hermann Ludwig, Eduard PfefferkornfiledCriticalLouis Hermann Ludwig
Application grantedgrantedCritical
Publication of AT840BpublicationCriticalpatent/AT840B/de