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| Patents for Ladislav Kaplan | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,194,182 | Aug. 08, 1916 | L. Kaplan | Direct-Reading Indicator Calipers | calipers | |
| 1,295,327 | Feb. 25, 1919 | L. Kaplan | Direct-Reading Indicator Calipers | calipers | |
| 1,317,708 | Oct. 07, 1919 | L. Kaplan | Calipers | indicating calipers | |