Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5063633 | Fluid handling apparatus for bowling lane cleaning device | Donald E. Ingermann, Ronald L. Smith, Stephen F. Caffrey | 1991-11-12 |
| 4962565 | Automatic vacuum bowling lane stripper | Donald E. Ingermann, Ronald L. Smith, Stephen F. Caffrey | 1990-10-16 |
| 4959884 | Combination bowling lane stripper and dressing apparatus | Donald E. Ingermann, Ronald L. Smith, Stephen F. Caffrey | 1990-10-02 |
| 4920604 | Automatic vacuum bowling lane stripper | Donald E. Ingermann, Ronald L. Smith, Stephen F. Caffrey | 1990-05-01 |
| 4757831 | Golf club cleaning machine | Donald E. Ingermann | 1988-07-19 |