Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7788799 | Linear resilient material variable resistor | Allan E. Schrum | 2010-09-07 |
| 7684953 | Systems using variable resistance zones and stops for generating inputs to an electronic device | David Feist, Brian St. Jacques, Archimedes Mandap, Timothy Martin, Eric Belford | 2010-03-23 |
| 7629871 | Resilient material variable resistor | Allan E. Schrum | 2009-12-08 |
| 7391296 | Resilient material potentiometer | Allan E. Schrum | 2008-06-24 |
| 7190251 | Variable resistance devices and methods | Allan E. Schrum | 2007-03-13 |
| 6563488 | Pointing device with integrated switch | Allan E. Schrum | 2003-05-13 |
| 6496178 | Pointing device | Allan E. Schrum | 2002-12-17 |
| 6404323 | Variable resistance devices and methods | Allan E. Schrum | 2002-06-11 |
| 6313826 | Pointing device with non-spring return mechanism | Allan E. Schrum | 2001-11-06 |
| 6252582 | Ergonomic pointing device | Allan E. Schrum | 2001-06-26 |
| 6184866 | Pointing device | Allan E. Schrum | 2001-02-06 |
| 5066125 | Electrothermal direct injection torch for inductively coupled plasma | William Henderson | 1991-11-19 |