Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5901505 | Portable riser | Thomas A. Dettmann, Mark Gallea, Leslie R. Abraham | 1999-05-11 |
| 5833199 | Music stand | Gary M. Benting, Eric J. Mueller, Cindy Louise Weber | 1998-11-10 |
| 5787647 | Portable riser | Thomas A. Dettmann, Mark Gallea, Leslie R. Abraham | 1998-08-04 |
| 5651405 | Portable acoustic shell | Gary M. Benting, Leslie R. Abraham | 1997-07-29 |
| 5381873 | Portable riser unit with a telescopic brace | John H. Kniefel, Glenn G. Kanengieter | 1995-01-17 |
| 4315633 | Storage cart for music stands | Wayne V. Tenner | 1982-02-16 |
| RE30830 | Portable riser | Jerry A. Wenger, Harvey M. Urch | 1981-12-22 |
| 4241777 | Portable shell | Jerry A. Wenger, Herman A. Clausen, Harvey M. Urch | 1980-12-30 |
| 4238097 | Conductor's chair | Herman A. Clausen, Logan Johnson, Jerry A. Wenger | 1980-12-09 |