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| Patents for Joseph Gregory | |||||
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| Number | Date | Patentee | Title | Type | |
| 572,582 | Dec. 08, 1896 | W. Stevenson | Weather-Board Gage and Support | clapboard markers | |
| 868,585 | Oct. 15, 1907 | A.A. Stelting | Force-Feed Lubricator | lubricators | |