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| All Patents in class 250/559.29 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,375,665 | May 08, 1945 | M. Koulicovitch | Electric Devive for Signaling the Position of a Movable Mark | ||
| 2,406,299 | Aug. 20, 1946 | M. Koulicovitch | Machine Tool with Photoelectric Positioning of the Work Table | metalworking machines | |
| 2,416,968 | Mar. 04, 1947 | F. Turrettini | Stroboscopic Device for Determining Electrically the Position of an Object | ||
| 2,694,804 | Nov. 16, 1954 | E.K. Wagner | Positioning Device | ||