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Patent:US1515988


Patent:US 1515988
Title:Integrating and Registering Device for Fluid Meters
Date:18.11.1924
Place:
Country:USA
Person:J. R. Armstrong et al
Company:
Internal Links:Planimeter
Keywords:
Link to the patent office:
(without guarantee)
 US1515988 (espacenet),  US1515988 (uspto)


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Aus der Patentschrift US1515988