Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4992770 | Fuse with improved spring timer | Keith Allen Spalding, Fred Levko, Donald E. Johnston, John Ackermann | 1991-02-12 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4992770 | Fuse with improved spring timer | Keith Allen Spalding, Fred Levko, Donald E. Johnston, John Ackermann | 1991-02-12 |