Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6588653 | Envelope pull opener | — | 2003-07-08 |
| 6523533 | High precision ball launch system | Brian S. R. Armstrong | 2003-02-25 |
| 6457638 | Envelope pull opener | — | 2002-10-01 |
| 6447403 | Method and apparatus for improving putting skill | — | 2002-09-10 |
| 6384908 | Orientation dependent radiation source | Brian Stewart Randall Armstrong | 2002-05-07 |
| 6375580 | Automatic golf ball placement device | Ralph Marshall | 2002-04-23 |
| 5936722 | Apparatus and method for determining the angular orientation of an object | Brian S. R. Armstrong | 1999-08-10 |
| 5936723 | Orientation dependent reflector | Brian S. R. Armstrong | 1999-08-10 |
| 5234065 | Portable weight measuring device | — | 1993-08-10 |