Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4242741 | Floating shunt seismic amplifier | — | 1980-12-30 |
| 4241428 | Line compensated seismic amplifier | Albert J. Berni | 1980-12-23 |
JP
John F. Parrish
Overall (All Time): #2,374,225 of 4,157,543Top 60%
2
Patents All Time