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.)
Filing date
Publication date
Application filed by Ludwig BoehmfiledCriticalLudwig Boehm
Publication of CH61141ApublicationCriticalpatent/CH61141A/de
CH61141A1912-06-191912-06-19Einrichtung zur selbsttätigen Feststellung von zum Schließen einer Öffnung dienenden beweglichen Gegenständen
CH61141A
(de)