| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| Patents for Oscar C. Hedin | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 2,226,226 | Dec. 24, 1940 | O.C. Hedin | Removable pilot for counterbore or reamer | metalworking countersinks | |
| 2,397,109 | Mar. 26, 1946 | O.C. Hedin | Device for precision drawing | ||