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All Patents in class 33/800 | |||||
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 |