Webster Signature Database - Suggest Correction

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Signature	Maker	Instruments	Comments	Location	References
PORRO, IGNAZIO	Italy; France; Italy, 1795-1875, MIM OIM SIM	Prism Monocular with Telemeter, 1849 = SWE; Cylindrical Slide Rule = SWE.	invented and made the first prism monocular; retired in 1861.	Florence; Paris; Milan.	Pipping 1; Dewhirst; Brenni 1; RSW.
PORRO, IGNAZIO	Italy; France; Italy, 1795-1875, MIM OIM SIM	Prism Monocular with Telemeter, 1849 = SWE; Cylindrical Slide Rule = SWE.	invented and made the first prism monocular; retired in 1861.	Florence; Paris; Milan.	Pipping 1; Dewhirst; Brenni 1; RSW.

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