Patent:CH69007

From the great encyclopedia of mechanical calculating


Patent:CH 69007
Title:Lehrmittel fuer Rechnen
Date:17.05.1915
Place:Russland
Country:Switzerland
Person:Welfle, Helene (P)
Company:
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 CH69007 (http://v3.espacenet.com/textdoc?DB=EPODOC&F=0&IDX=CH69007)


Enlarge

Aus der Patentschrift CH69007

Retrieved from "http://www.rechnerlexikon.de/en/wiki.phtml?title=Patent:CH69007"
This page was last modified 16:47, 18. Oct 2007.