Patents for Charles Bartlett Bosworth


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Patents for Charles Bartlett Bosworth
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	476,512	Jun. 07, 1892	C.B. Bosworth	Device for testing pressure-gauges
	549,700	Nov. 12, 1895	J.H. Millett, C.B. Bosworth	Steam-gage