Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4395357 | Calcium silicate granules forming a microporous structure | Walter Kramer | 1983-07-26 |
| 4275684 | Animal litter | Walter Kramer | 1981-06-30 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4395357 | Calcium silicate granules forming a microporous structure | Walter Kramer | 1983-07-26 |
| 4275684 | Animal litter | Walter Kramer | 1981-06-30 |