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Patent:US1261490


Patent:US 1261490
Title:Apparatus for Recording and Compiling Statistical Data
Date:02.04.1918
Place:
Country:USA
Person:W. B. Clark & F. J. Pritchard
Company:
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US1261490 (espacenet),  US1261490 (uspto)


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Aus der Patentschrift US1261490