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 August NiederkromfiledCriticalAugust Niederkrom
Publication of CH30203ApublicationCriticalpatent/CH30203A/de
CH30203A1904-02-171904-02-17Scharnier zum Befestigen an Schulbänken, um das Umlegen derselben, sowie die Reinigung des Fußbodens zu erleichtern
CH30203A
(de)