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| Patents for Knight Engineering & Sales Co. | |||||
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| Number | Date | Patentee | Title | Type | |
| D58,117 | Jun. 07, 1921 | A.H. Sweetland | Design for an electrically-operated hand-drill | handheld power drills | |
| 1,411,538 | Apr. 04, 1922 | A.H. Sweetland | Hand drill | handheld power drills | |
| CA-221,357 | Jul. 25, 1922 | A.H. Sweetland | Hand drill | handheld power drills | |