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All Patents in class 116/DIG.6 | |||||
Number | Date | Patentee | Title | Type | |
1,532,297 | Apr. 07, 1925 | E. Hart, C.L. Bausch | Calipers | indicating calipers | |
2,228,497 | Jan. 14, 1941 | E.J. Witchger | Indicating device for measuring instruments |