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All Patents in class 340/870.27
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
1,845,437	Feb. 16, 1932	M.K. Parkhurst	Measuring Device
2,895,121	Jul. 14, 1959	W.R. Bliss	Read-out apparatus for movable indicating mechanisms	computer apparatus and systems

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