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| Patents for John D. Williams | |||||
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| Number | Date | Patentee | Title | Type | |
| 8,869 | Apr. 13, 1852 | W. Baker | Hinge | ||
| RE326 | Aug. 28, 1855 | W. Baker | Lock Hinge | ||
| 471,599 | Mar. 29, 1892 | N.G. Boggs, J.M. Brown | Cornice and eaves-trough brake machine | sheet metal brakes | |
| 1,711,915 | May 07, 1929 | J.D. Williams | Auxiliary Scrap Shears | metal shearing machines | |