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| All Patents in class 346/134 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 265,198 | Sep. 26, 1882 | J.B. Webb | Diagram Instrument for Engines | ||
| 343,291 | Jun. 08, 1886 | C.W. Barnaby | Steam Engine Indicator | ||
| 1,063,272 | Jun. 03, 1913 | H.B. McCabe | Time Recording Register | ||