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Patent:GB191310753


Patent:GB 191310753
Title:Improvements in and relating to Slide Rule Frames
Date:28.08.1913
Place:Stein b. Nürnberg
Country:Great Britain
Person:
Company:Faber-Castell (P)
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Keywords:
Link to the patent office:
(without guarantee)
 GB191310753


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Aus der Patentschrift GB191310753