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| Patents for Adolph H. Hawkinson | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,401,469 | Dec. 27, 1921 | A.H. Hawkinson | Chisel for hollow-chisel mortiser | mortise chisels | |
| 1,655,836 | Jan. 10, 1928 | A.H. Hawkinson | Saw Toothed Wood Boring Bit | drill bits | |
| 1,725,515 | Aug. 20, 1929 | A.H. Hawkinson, E.W. Peterson | Method of sharpening hollow or mortiser chisels | sharpening machines | |