Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D689828 | Doorbell button | — | 2013-09-17 |
| D501652 | Doorbell push button | Thomas Gordon | 2005-02-08 |
| D421727 | Doorbell button | Thomas Gordon | 2000-03-21 |
| D414748 | Doorbell button | Tom Gordon | 1999-10-05 |
| D404673 | Doorbell button | Tom Gordon | 1999-01-26 |
| D380482 | Head mounted display system | Kevin Shimasaki, Joel Robinson, Wendie L. Siverts | 1997-07-01 |
| 5448405 | Glare filter | Eivind Clausen, James D. Allsop, Michael W. Yeakel, LeRoy J. LaCelle | 1995-09-05 |