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| Patents for M. A. Knowles | |||||
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| Number | Date | Patentee | Title | Type | |
| D28,942 | Jun. 28, 1898 | A.W. Hutaf | Design for a Hammer | hammers | |
| 606,381 | Jun. 28, 1898 | T. Dinkelberg | Wrench | chain and strap wrenches | |
| 611,625 | Oct. 04, 1898 | J.E. Goddard | Gaging Implement | punches | |
| 613,283 | Nov. 01, 1898 | W.F. Krahe | Spoke Grip | spoke nipple wrenches | |
| 614,848 | Nov. 29, 1898 | T.J. Doran | Hand-operated drill | drill presses | |