Legal status (The legal status 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 status listed.)
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PORVEN SAN MARTIN MANUEL
Original Assignee
PORVEN SAN MARTIN MANUEL
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Publication date
Application filed by PORVEN SAN MARTIN MANUELfiledCriticalPORVEN SAN MARTIN MANUEL
Priority to ES0025598UpriorityCriticalpatent/ES25598Y/en
Publication of ES25598UpublicationCriticalpatent/ES25598U/en
Application grantedgrantedCritical
Publication of ES25598YpublicationCriticalpatent/ES25598Y/en
A replaceable school blackboard is claimed, characterized by carrying in all the angles of the frame or in part, fasteners or screws, which allow that when breaking the slate can be replaced by another, taking advantage of the same frames, and being these again, perfectly joined , without risks or dangers of disarticulation. (Machine-translation by Google Translate, not legally binding)
ES0025598U1951-01-221951-01-22
School board, replaceable
ExpiredES25598Y
(en)
Device applicable to pencils and mechanical plinths to advance the mna with or without recoil (Machine-translation by Google Translate, not legally binding)