Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4825430 | Erasable optical data storage medium having an embedded servo track and a subsurface recording interface | John S. Hartman, Michael A. Lind, W. Eugene Skiens, John W. Swanson, Jonathan R. Biles | 1989-04-25 |
| 4270876 | Method of lining a vertical mine shaft with concrete | James D. Eklund, Donald E. Rasmussen, Robert G. Sullivan, Robert B. Moffat | 1981-06-02 |