Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5230185 | Blasting apparatus and method | Lawrence Kirschner, William E. Spears, Jr. | 1993-07-27 |
| 5160547 | Process for removing coatings from sensitive substrates, and blasting media useful therein | Lawrence Kirschner, William E. Spears, Jr. | 1992-11-03 |
| 5112406 | Process for removing coatings from sensitive substrates, and sodium sulfate-containing blasting media useful therein | Lawrence Kirschner | 1992-05-12 |
| 5083402 | Blasting apparatus | Lawrence Kirschner, William E. Spears, Jr. | 1992-01-28 |
| 5081799 | Blasting apparatus | Lawrence Kirschner, William E. Spears, Jr. | 1992-01-21 |