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