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| All Patents in class 138/141 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 4,674 | Jul. 28, 1846 | A. McBurth | Using cloth to strengthen veneer | |
 | 11,282 | Jul. 11, 1854 | W. McKinstry | Adjustable bearing for circular saws | |
 | 142,528 | Sep. 02, 1873 | M. Stephens | Improvement in cement-lined pipes | |
| 409,265 | Aug. 20, 1889 | E.L. Wyckoff, A. Wyckoff | Pipe casing or conduit | ||