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Signature	Maker	Instruments	Comments	Location	References
GRATELOUP, JEAN-BAPTISTE	France, 1735-1817, OIM		devised a new method of joining achromatic lenses.	Paris.	Daumas 1; Nachet.
GRATELOUP, JEAN-BAPTISTE	France, 1735-1817, OIM		devised a new method of joining achromatic lenses.	Paris.	Daumas 1; Nachet.

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