![]() | |||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| All Patents in class 137/77 | |||||
| Number | Date | Patentee | Title | Type | |
| 2,860,649 | Nov. 18, 1958 | D.L. Billian | Emergency shut-off valve | ||
| 2,867,228 | Jan. 06, 1959 | R.V. Klikunas, F.F. Rike | Emergency shut-off valve | ||