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| Patents for Alfred J. Signor | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 256,448 | Apr. 11, 1882 | A.J. Signor | Die Stock | |
| 538,132 | Apr. 23, 1895 | A.J. Signor | Electrical Igniting Device for Gas Engines | ||
| 662,155 | Nov. 20, 1900 | A.J. Signor | Multiple Cylinder Explosive Engine | ||
| 662,315 | Nov. 20, 1900 | A.J. Signor | Sparking Igniter for Explosive-Engines | ||