Warren J. Christensen
2Patents
0Active
2Granted
19Portfolio score
Filing activity: Apr 23, 2001 → Mar 26, 2002
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6405891B1 | Underground rake storage apparatus and method | Human Necessities | 5 | Expired |
| US6691887B2 | Underground rake storage apparatus and method | Human Necessities | 0 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.