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| All Patents in class 238/336 | |||||
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| Number | Date | Patentee | Title | Type | |
| 909,954 | Jan. 19, 1909 | E.M. Smith | Rail Brace | track and switches | |
| 1,479,676 | Jan. 01, 1924 | J.S. Reid | Track Brace | sawmill accessories | |