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| Patents for Minus Ward | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,755X | May 15, 1827 | M. Ward | Use of heated air, gases, etc. in the aid of steam power | steam apparatus | |
| 4,964X | Jan. 19, 1828 | R.W. Hall, M. Ward | Generating inflammable gases from antracite coal | ||