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| All Patents in class 73/861.53 | |||||
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| Number | Date | Patentee | Title | Type | |
| 729,511 | May 26, 1903 | C.E. Sargent | Steam Meter | steam meters | |
| 883,670 | Mar. 31, 1908 | C.E. Sargent | Steam Meter | steam meters | |