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| All Patents in class 104/87 | |||||
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| Number | Date | Patentee | Title | Type | |
| 644,675 | Mar. 06, 1900 | J.T. Ludlow | Rope-tramway system | material handling | |
| 954,275 | Apr. 05, 1910 | J.C. Fitzgerald | Elevated track for carriers | material handling | |
| 957,757 | May 10, 1910 | J.C. Fitzgerald | Elevated track | material handling | |
| 970,032 | Sep. 13, 1910 | J.C. Fitzgerald | Elevated-track system for overhead carriers | material handling | |
| RE13,246 | May 30, 1911 | J.C. Fitzgerald | Elevated track for carriers | material handling | |