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Patent:IT304676

Patent:	IT 304676
Title:	Dispositivo per la facile lettura dei bastoncini di Neper
Date:	02.01.1932
Place:	Pescia (PT)
Country:	Italy
Person:	Marchi, Pierluigi ; Trapanesi, Luigi
Company:
Internal Links:
Keywords:	Napier bones
Link to the patent office: (without guarantee)	IT304676

Compact cylindrical device using Napier bones to multiply a 4 digits number