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| Patents for William Townsend | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,700,692 | Jan. 29, 1929 | W. Townsend | Wide-range meter | gas meters | |
| 1,804,133 | May 05, 1931 | W. Townsend | Unloading valve | pressure regulators | |