Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4352560 | Self-leveling and grade setting laser apparatus | by Alena Alexander, administrator | 1982-10-05 |
| 4247809 | Electrical levelling system for laser beam | — | 1981-01-27 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4352560 | Self-leveling and grade setting laser apparatus | by Alena Alexander, administrator | 1982-10-05 |
| 4247809 | Electrical levelling system for laser beam | — | 1981-01-27 |