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| Patents for William W. Birnstock | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,226,450 | May 15, 1917 | W.W. Birnstock | Cultivator | cultivators and tillers | |
| 1,259,348 | Mar. 12, 1918 | W.W. Birnstock, C.W. Vogel | Bottle-crate | ||
| 1,324,580 | Dec. 09, 1919 | W.W. Birnstock | Bottle-crate | ||
| 1,349,144 | Aug. 10, 1920 | W.W. Birnstock | Nozzle-header for bottle-washing machines | ||