Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4533333 | Helicopter extractable cold weather/water liferaft | Curtis E. Shields, Harry O. Hindlin, Robert E. Hamilton | 1985-08-06 |
| 4393350 | Method for rapidly detecting subterranean tunnels by detecting a non-null value of a resultant horizontal magnetic field component | Peder M. Hansen, John G. Hoffman, Elwin W. Seeley | 1983-07-12 |
| 4290020 | Method and apparatus for detecting subterranean anomalies by generating two parallel magnetic fields | Peder M. Hansen, John G. Hoffman, Elwin W. Seeley | 1981-09-15 |