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All Patents in class 33/800
Patents 16 - 19 of 19
Number	Date	Patentee	Title	Type
1,532,297	Apr. 07, 1925	E. Hart, C.L. Bausch	Calipers	indicating calipers
1,968,331	Jul. 31, 1934	B.B. Wittfoht	Calipers	calipers
1,990,138	Feb. 05, 1935	H. Schüster	Measuring Device for Tube Walls	measurement gauges
2,785,471	Mar. 19, 1957	W.J. Croshier, E. Aldeborgh	External and Internal Caliper Gage

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