Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D494485 | Pipe measuring device | Richard J. Schiene | 2004-08-17 |
| 5023178 | Composting method and apparatus utilizing air assist to aid in movement of organic matter | William L. Christie, Harold W. Johnson, Robert Charles Hartshorn Black | 1991-06-11 |