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| Patents for Joseph Hardill | |||||
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| Picture | Number | Date | Patentee | Title | |
 | CA-53,477 | Sep. 14, 1896 | J. Hardill | Steam engine | |
 | CA-58,684 | Jan. 13, 1898 | J. Hardill | Steam engine | |
 | 641,103 | Jan. 09, 1900 | J. Hardill | Compound steam-engine | |
 | CA-76,662 | Jul. 15, 1902 | J. Hardill | Steam engine | |
 | CA-76,663 | Jul. 15, 1902 | J. Hardill | Steam engine governor | |
 | CA-76,664 | Jul. 15, 1902 | J. Hardill | Steam engine governor | |
 | 728,707 | May 19, 1903 | J. Hardill | Engine Governor | |