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Die große Enzyklopädie des mechanischen Rechnens

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Patent:US2675961


Patent:US 2675961
Title:Electric Calculating Machine
Date:20.04.1954
Place:
Country:USA
Person:Valdemar Larsen Fridthiof Oska
Company:Duba Ab
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US2675961 (espacenet),  US2675961 (uspto)

Revision as of 16:57, 18. Oct 2007 Current revision
Line 1: Line 1:
 +[[Bild:US2675961-drawing.png|right|thumb|300px|Aus der Patentschrift US2675961]]
* DATUM: 20.04.1954 * DATUM: 20.04.1954
* TITEL: Electric calculating system * TITEL: Electric calculating system
* PERSON: DUBA AB * PERSON: DUBA AB
 +*Patent Family: ( [[Patent:BE475738]], [[Patent:CH274564]], [[Patent:GB650792]], [[Patent:NL75420C]], [[Patent:US2581870]], [[Patent:US2675961]] )

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Aus der Patentschrift US2675961