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Signature	Maker	Instruments	Comments	Location	References
MUSSCHENBROEK, JAN VAN	Holland, 1687-1748, OIM PHIM	Microscope, 1702 = X; Air Pumps = LEY (1708) & (1722), KAS, DEU (1708).	made a wide range of philosophical instruments; worked for 's Gravesande; son of Johann Joosten van Musschenbroek and succeeded him in 1707.	Leyden.	Rooseboom 1; Crommelin 1; Daumas 1; Dewhirst; USNM; RSW; G.L'E. Turner 24.
MUSSCHENBROEK, JAN VAN	Holland, 1687-1748, OIM PHIM	Microscope, 1702 = X; Air Pumps = LEY (1708) & (1722), KAS, DEU (1708).	made a wide range of philosophical instruments; worked for 's Gravesande; son of Johann Joosten van Musschenbroek and succeeded him in 1707.	Leyden.	Rooseboom 1; Crommelin 1; Daumas 1; Dewhirst; USNM; RSW; G.L'E. Turner 24.

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