AT658BAT658DAAT658BAT 658 BAT658 BAT 658BAT 658D AAT658D AAT 658DAAT 658 BAT658 BAT 658B
Authority
AT
Austria
Application number
Inventor
Theodor Frederking
Original Assignee
Theodor Frederking
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Publication date
Application grantedgrantedCritical
Publication of AT658BpublicationCriticalpatent/AT658B/de