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Signature	Maker	Instruments	Comments	Location	References
GAVARD, ADRIEN	France, c.1840, MIM	Heliographs = CNAM; Pantograph = D; Drafting Machine = D.(1987).	"Eseur du Dépôt général de la Guerre"; drafting machine marked "Par Brevet d'Iven"; patented a "perspectographe", a perspective machine.	6 rue Ventadour; Quai des Orfèvres, 70; both in Paris.	USNM; Cons. Nat'l 1; Destombes 4; Coffeen 15; Delehar 7.
GAVARD, ADRIEN	France, c.1840, MIM	Heliographs = CNAM; Pantograph = D; Drafting Machine = D.(1987).	"Eseur du Dépôt général de la Guerre"; drafting machine marked "Par Brevet d'Iven"; patented a "perspectographe", a perspective machine.	6 rue Ventadour; Quai des Orfèvres, 70; both in Paris.	USNM; Cons. Nat'l 1; Destombes 4; Coffeen 15; Delehar 7.

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