Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 7777122 | Musical note speedometer | Tobias Hurwitz | 2010-08-17 | |
| 6796057 | Growth indicator for children's shoes | — | 2004-09-28 | |
| 6694888 | Frangible bullet | Bill Jopson | 2004-02-24 | |
| 6374515 | Shoe having a floating insole | — | 2002-04-23 | |
| 6279251 | Self-adjusting shoe | — | 2001-08-28 | |
| D401740 | Shoe sole | — | 1998-12-01 | |
| D401042 | Shoe sole | — | 1998-11-17 | |
| 4944099 | Expandable outsole | — | 1990-07-31 | |
| D282123 | Shoe outsole | — | 1986-01-14 | |
| 4494320 | Shoe outsole | — | 1985-01-22 | |
| D267366 | Shoe sole | — | 1982-12-28 | |
| D267288 | Shoe sole | — | 1982-12-21 | |
| 4289537 | Method of producing cement | John A. Persson | 1981-09-15 | $478,000 |
| 4249952 | Method for producing cement clinker from cement kiln waste dust | John A. Persson | 1981-02-10 | $619,000 |