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| All Patents in class 277/482 | |||||
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| Number | Date | Patentee | Title | Type | |
| 31,971 | Apr. 09, 1861 | J.O. Haight | Piston of steam-engines | piston ring and packing | |
| 61,728 | Feb. 05, 1867 | T.A. Goff | Improvement in pistons for steam engines | piston ring and packing | |
| 225,555 | Mar. 16, 1880 | E.M. Birdsall | Piston for Steam Engines | steam engines | |