Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4759719 | Teaching device for the demonstration of scientific principles | — | 1988-07-26 |
| 4377426 | Pyrotechnic process | — | 1983-03-22 |
| 4362584 | Method for binary propellant | — | 1982-12-07 |
| 4188192 | Fire igniting method and apparatus | Sol J. Levenson | 1980-02-12 |