Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7946930 | Face structure for a golf club head | Steven M. Ehlers, John B. Kosmatka, Matthew J. Erickson | 2011-05-24 |
| 7878922 | Face structure for a golf club head | Steven M. Ehlers, John B. Kosmatka, Matthew J. Erickson | 2011-02-01 |
| 7645201 | Method and apparatus for forming a face structure for a golf club head | Steven M. Ehlers, John B. Kosmatka, Matthew Erickson | 2010-01-12 |
| 7527565 | Method and apparatus for forming a face structure for a golf club head | Steven M. Ehlers, John B. Kosmatka, Matthew J. Erickson | 2009-05-05 |
| 7144334 | Golf club head | Steven M. Ehlers, John B. Kosmatka, Matthew J. Erickson | 2006-12-05 |
| 6945250 | Magnetic condom | George Shapiro | 2005-09-20 |
| 6932716 | Golf club head | Steven M. Ehlers, John B. Kosmatka, Matthew J. Erickson | 2005-08-23 |
| 6895968 | Magnetic condom | George Shapiro | 2005-05-24 |
| 6863070 | Magnetic condom | George Shapiro | 2005-03-08 |