Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4312052 | Method for identifying weak sands | Charles B. Vogel | 1982-01-19 |
| 4293934 | Circumferential acoustic device | Charles B. Vogel | 1981-10-06 |
RH
Robert A. Herolz
Overall (All Time): #2,365,111 of 4,157,543Top 60%
2
Patents All Time