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| All Patents in class 285/371 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 94,146 | Aug. 24, 1869 | M. Stephens | Improvement in joints for cement-pipes | |
 | RE4,980 | Jul. 16, 1872 | M. Stephens | Improvement in joints for cement-pipes | |