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| Patents for Samuel Lawson | |||||
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| Number | Title | Classification(s) | |||
| 306,933 | Gas Engine | 123/196R, 123/39, 123/81B | |||
| 307,057 | Gas Engine | 123/39, 123/405, 123/81B | |||
| 399,907 | Gas Engine | 123/144, 123/52.2 | |||
| 399,908 | Gas Engine | 123/39 | |||
| 402,749 | Gas Engine | 123/144, 137/613 | |||
| 402,750 | Gas Engine | 123/144 | |||
| 402,751 | Gas Engine | 123/144, 123/182.1 | |||
| 433,246 | Valve for Gas Engines | 123/144, 123/81B | |||
| 498,476 | Gas Engine | 123/146 | |||