Keystone Drill Services, Inc.
2Patents
2Active
2Granted
40Portfolio score
Filing activity: Jun 7, 2006 → Nov 27, 2006 · 2 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7389833B2 | Multi-sectional percussive drill bit assembly | Fixed Constructions | 10 | Active |
| US7419017B2 | Multi-sectional percussive drill bit assembly | Fixed Constructions | 3 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.