Number | Name | Date | Kind |
---|---|---|---|
691904 | Hallbergh | Jan 1902 | |
757932 | Jones | Apr 1904 | |
796252 | Ross et al. | Aug 1905 | |
802436 | Van Order | Oct 1905 | |
996099 | Leidecker | Jun 1911 | |
1107532 | Lofton | Aug 1914 | |
1130792 | Burton | Mar 1915 | |
1133386 | Lofton | Mar 1915 | |
1169976 | Lofton | Feb 1916 | |
1495011 | Ford | May 1924 | |
2619837 | Ford | Dec 1952 | |
2620830 | Schultz | Dec 1952 | |
2650837 | Smith et al. | Sep 1953 | |
2750958 | Baker et al. | Jun 1956 | |
2781056 | Carufel | Feb 1957 | |
2797707 | Hursh | Jul 1957 | |
2892641 | Ford | Jun 1959 | |
3072136 | Roos | Jan 1963 | |
3083693 | Kunz | Apr 1963 | |
3262464 | Frantz | Jul 1966 | |
3443436 | Meyer | May 1969 | |
3485371 | Costantini | Dec 1969 | |
3511524 | Ford et al. | May 1970 | |
3756275 | Barrera | Sep 1973 | |
3821964 | Bacon | Jul 1974 | |
3894432 | Coughlin | Jul 1975 | |
3961528 | Ford | Jun 1976 | |
4284097 | Becker et al. | Aug 1981 | |
4420010 | Becker et al. | Dec 1983 | |
4532958 | Napolitano | Aug 1985 |
Number | Date | Country |
---|---|---|
2517198 | Oct 1976 | DEX |
Entry |
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"Water Meter Installation Applications", Watts Regulator Company, Watts No. 7 Residential Dual Check Backflow Preventer, Jun. 1981. |