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| Patents for Delbert Sward | |||||
| Number | Date | Patentee | Title | Type | |
| 1,774,260 | Aug. 26, 1930 | V.S. Firestone, D. Sward | Latch | ||
| 1,796,923 | Mar. 17, 1931 | V.S. Firestone, D. Sward | Latch | ||
| 2,166,735 | Jul. 18, 1939 | D. Sward | Latch | ||