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Patent:US2993278


Patent:US 2993278
Title:Area Measuring Instrument
Date:25.07.1961
Place:
Country:USA
Person:G. Lory
Company:
Internal Links:Planimeter
Keywords:
Link to the patent office:
(without guarantee)
 US2993278 (espacenet),  US2993278 (uspto)


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Aus der Patentschrift US2993278