Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4921067 | Self-propelled percussion unit and method of using same | Lawrence William Smith | 1990-05-01 |
| 4715471 | Self-propelled percussion unit and method of using same | Lawrence William Smith | 1987-12-29 |
| 4315550 | Self-propelled apparatus for setting cemetery markers and the like | Lawrence William Smith | 1982-02-16 |
| 4306406 | Grass trimming apparatus | Lawrence William Smith | 1981-12-22 |