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| Patents for Hilger Co. | |||||
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| Picture | Number | Date | Patentee | Title | |
| 2,220,370 | Nov. 05, 1940 | W.P. Hilger, R.E. McFadden, J.E. Swalinkavich, Jr. | Drum for smoothing surfaces | ||
| CA-402,418 | Jan. 20, 1942 | R.E. McFadden, J.E. Swalinkavich, Jr. | Drum for smoothing surfaces | ||
 | D154,851 | Aug. 16, 1949 | W.P. Hilger | Design for a floor sander | |
 | 2,483,904 | Oct. 04, 1949 | W.P. Hilger | Floor sanding edger | |
 | 2,486,947 | Nov. 01, 1949 | W.P. Hilger | Surface finishing device | |
 | 2,565,658 | Aug. 28, 1951 | W.P. Hilger | Floor sanding edger | |