| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 6 | |
| #2 | Canada | 5 |
| # | Industry | |
|---|---|---|
| #1 | Measurement |
| # | Technology | |
|---|---|---|
| #1 | Geophysics | |
| #2 | Measuring electric variables |
| # | Name | Total Patents |
|---|---|---|
| #1 | Brant Arthur A | 7 |
| #2 | Taylor Henry G | 3 |
| #3 | Gilbert Everett A | 2 |
| #4 | Gordon Taylor Henry | 1 |
| #5 | Wengel Raymond W | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2571529A | Drill hole and underground resistivity method | |
| US2599687A | Drill hole magnetometer apparatus | |
| US2611004A | Geophysical exploration | |
| US1799398A | Method of recording seismic waves | |
| US1745817A | Oscillograph | |
| US1789055A | Seismometer | |
| CA494247A | Geophysical exploration | |
| CA484494A | Drill hole and underground resistivity method | |
| CA298229A | Seismometer | |
| CA479290A | Drill hole wedging devices | |
| CA502335A | Drill hole magnetometer apparatus |