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| Patents for John Desmond | |||||
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| Number | Date | Patentee | Title | Type | |
| CA-3,362 | Apr. 27, 1874 | J. Desmond, A.L. McMillan | Piston de Machine a Vapeur | steam engine pistons | |
| 326,408 | Sep. 15, 1885 | J. Desmond | Steam Injector | water injectors | |
| 536,922 | Apr. 02, 1895 | J. Desmond | Injector | water injectors | |
| 683,914 | Oct. 08, 1901 | J. Desmond | Injector | water injectors | |