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| Patents for Edwin C. Swanson | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 1,971,289 | Aug. 21, 1934 | E.C. Swanson, J.H. Abramson | Ratcheting Screwdriver | |
| 1,971,290 | Aug. 21, 1934 | E.C. Swanson, J.H. Abramson | Ratchet mechanism | ||
 | 1,971,291 | Aug. 21, 1934 | E.C. Swanson, J.H. Abramson | Ratchet device | |
 | 2,664,126 | Dec. 29, 1953 | E.C. Swanson, J.H. Mansfield | Ratchet spiral screw driver | |