Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D515319 | Brush | Charles Ashley, Leonard Spitzer, John E. Studer | 2006-02-21 |
| D501606 | Brush | Leonard Spitzer, John E. Studer | 2005-02-08 |
| D498057 | Cleaning brush | Charles Ashley, Ian Corkhill, Leonard Spitzer, John E. Studer | 2004-11-09 |
| D493994 | Brush holder | Leonard Spitzer, John E. Studer | 2004-08-10 |