Patent:DE335681

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Patent:DE 335681
Title:Vorrichtung zum Bruchrechnen
Date:18.05.1919
Place:Erzweiler-Baumholder Bez. St. Wendel
Country:Germany
Person:Diehl, Wilhelm (P)
Company:
Internal Links:Lehrmittel
Keywords:Bruchrechnung
Link to the patent office:
(without guarantee)
 DE335681 (http://v3.espacenet.com/textdoc?DB=EPODOC&F=0&IDX=DE335681)


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