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Patent:US1577326


Patent:US 1577326
Title:Adding Machine spool
Date:16.03.1926
Place:
Country:USA
Person:Leon Elmer G
Company:
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US1577326 (espacenet),  US1577326 (uspto)


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Aus der Patentschrift US1577326