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| All Patents in class 403/312 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 86,266 | Jan. 26, 1869 | E.L. Abbott | Improved shaft-coupling | |
 | 111,152 | Jan. 24, 1871 | S.A. Smith | Improvement in couplings for shafting | |
 | 443,895 | Dec. 30, 1890 | G.E. Burt | Shaft-coupling | |
 | 812,162 | Feb. 06, 1906 | T. Bemis | Pneumatic tube for store service | |
 | 907,539 | Dec. 22, 1908 | M.T. Thomas | Shaft-clamp | |