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| Patents for Gustaf H. Ekstrom | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,491,523 | Apr. 22, 1924 | G.H. Ekstrom | Adjustable drilling and balancing tool | balancing machinery | |
| 2,251,329 | Aug. 05, 1941 | G.H. Ekstrom | Rubbing machine | ||
| 2,282,043 | May 05, 1942 | G.H. Ekstrom | Rubbing machine | ||
| 2,371,045 | Mar. 06, 1945 | G.H. Ekstrom, B.R. Granberg | Feed screw mechanism | ||
| 2,464,296 | Mar. 15, 1949 | G.H. Ekstrom | Pad attaching means for rubbing machines and the like | ||