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| Patents for Zenonas L. Litvinas | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,508,662 | Sep. 16, 1924 | Z.L. Litvinas | Tailstock for multiple-spindle lathes | multiple spindle lathes | |
| CA-243,754 | Oct. 21, 1924 | Z.L. Litvinas | Turning lathe | multiple spindle lathes | |
| 1,717,047 | Jun. 11, 1929 | Z.L. Litvinas | Multiple spindle lathe | multiple spindle lathes | |