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| Patents for American Steam Gauge & Valve Co. | |||||
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| Number | Date | Patentee | Title | Type | |
| 768,473 | Aug. 23, 1904 | C.J. Manning | Recording Pen | industrial recording apparatus | |
| 951,131 | Mar. 08, 1910 | A.P. Kinney | Continuous Card Indicator | steam engine indicators | |