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| Patents for Sydney I. Prescott | |||||
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| Number | Date | Patentee | Title | Type | |
| 866,245 | Sep. 17, 1907 | V.J. Wahlstrom | Chuck | drill chucks | |
| 870,206 | Nov. 05, 1907 | V.J. Wahlstrom | Clutch | friction clutches | |
| 1,046,237 | Dec. 03, 1912 | V.J. Wahlstrom | Drill and chuck | ||
| 1,075,174 | Oct. 07, 1913 | V.J. Wahlstrom | Chuck | drill chucks | |
| 1,162,197 | Nov. 30, 1915 | V.J. Wahlstrom | Chuck | ||
| 1,224,596 | May 01, 1917 | B.W. Bronander | Tapping attachment for boring-machines | tapping heads and chucks | |