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Patent:US1336840


Patent:US 1336840
Title:Listing Machine
Date:13.04.1920
Place:
Country:USA
Person:Johantgen, Oliver David (P)
Company:
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US1336840 (espacenet),  US1336840 (uspto)


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Aus der Patentschrift US1336840