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Patent:US1292971


Patent:US 1292971
Title:Type Guard
Date:28.01.1919
Place:
Country:USA
Person:O. Thieme
Company:
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US1292971 (espacenet),  US1292971 (uspto)


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Aus der Patentschrift US1292971