Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6056231 | Pushing member for apparatus for paying out a roll of insulation material | Don Albert Neifer, Dennis K. Wenrick | 2000-05-02 |
| 5911385 | Tapered roller guide for apparatus for paying out an insulation support sheet | Don Albert Neifer, Dennis K. Wenrick | 1999-06-15 |
| 5653081 | Method for paying out an insulation support sheet for use with an insulated roof structure | Dennis K. Wenrick, Robert J. Alderman, James E. Taylor | 1997-08-05 |