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Patent:US1514270


Patent:US 1514270
Title:Means for Teaching Reading and the like
Date:04.11.1924
Place:
Country:USA
Person:J. L. Thomson
Company:
Internal Links:Lehrmittel
Keywords:
Link to the patent office:
(without guarantee)
 US1514270 (espacenet),  US1514270 (uspto)


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Aus der Patentschrift US1514270