Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4475965 | Shale oil explosives | Earl D. York | 1984-10-09 |
| 4474629 | Oil shale retorting process for producing explosives | Earl D. York | 1984-10-02 |
| 4464993 | Process for use in blasting in situ retorts and the like | — | 1984-08-14 |
| 4464994 | Apparatus for plugging a blast hole in an in situ oil shale retort or the like | — | 1984-08-14 |
| 4435016 | In situ retorting with flame front-stabilizing layer of lean oil shale particles | Herman Wissenberg, Earl D. York | 1984-03-06 |