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| All Patents in class 73/261 | |||||
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| Number | Date | Patentee | Title | Type | |
| 178,829 | Jun. 13, 1876 | B. Fitts | Improvement in water-meters | water meters | |
| 1,528,728 | Mar. 03, 1925 | J.T. Wilkin, C.R. Houghton | Meter | gas meters | |
| 1,621,203 | Mar. 15, 1927 | C.R. Houghton | Pressure temperature compensator and slip integrator for meters | gas meters | |
| 1,700,692 | Jan. 29, 1929 | W. Townsend | Wide-range meter | gas meters | |
| 1,896,527 | Feb. 07, 1933 | C.R. Houghton | Tandem meter | gas meters | |