Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8020940 | Mining and demolition tool | Gregory Greenspan, Alexander Greenspan | 2011-09-20 |
| 7963615 | Mining and demolition tool | Alexander Greenspan, Gregory Greenspan | 2011-06-21 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8020940 | Mining and demolition tool | Gregory Greenspan, Alexander Greenspan | 2011-09-20 |
| 7963615 | Mining and demolition tool | Alexander Greenspan, Gregory Greenspan | 2011-06-21 |