Number | Name | Date | Kind |
---|---|---|---|
2797939 | Laser | Jul 1957 | |
3147961 | Kowalski | Sep 1964 | |
3522820 | Watts et al. | Aug 1970 | |
3703910 | Smith | Nov 1972 | |
3916943 | Hester et al. | Nov 1975 | |
4061345 | Lund | Dec 1977 | |
4258902 | Liebert et al. | Mar 1981 |
Number | Date | Country |
---|---|---|
2017265 | Aug 1982 | GBX |
Entry |
---|
Bulletin 792-B, "Gar-Seal 100 Series, TFE Butterfly Valves", Garlock, Inc. |