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| Patents for Obediah Parker | |||||
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| Number | Date | Patentee | Title | Type | |
| 9,082X | Sep. 09, 1835 | O. Parker | Hydraulic cement for various purposes | ||
| 9,083X | Sep. 09, 1835 | O. Parker | Cement, artificial stone or marble | ||
| 9,084X | Sep. 09, 1835 | O. Parker | Cement, artificial stone for architectural purposes | ||