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| Patents for Donald B. Swain | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 1,578,866 | Mar. 30, 1926 | D.B. Swain | Locking device and tool | |
 | 1,591,575 | Jul. 06, 1926 | D.B. Swain | Adjustable mechanical connection | |
 | 1,762,315 | Jun. 10, 1930 | D.B. Swain, H.A. Ryther | Ratchet screw driver | |