Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8146875 | Mosquito coil holder | — | 2012-04-03 |
| 6404608 | Overcurrent protection device | Michael Challis, Ian Paul Atkins | 2002-06-11 |
| 6118641 | Overcurrent protection device | Ian Paul Atkins, David M. Williams | 2000-09-12 |
| 5768341 | Communications channel testing arrangement | Michael Challis, Luc Van Leeuw | 1998-06-16 |
| 5652575 | Maintenance termination unit for telephone circuits | Michael Challis | 1997-07-29 |
| 5604785 | Remotely actuated switch and protection circuit | Michael Challis | 1997-02-18 |
| 5465188 | Circuit protection device | Michael Challis | 1995-11-07 |
| 5319515 | Circuit protection arrangement | Ian Paul Atkins, Michael Challis, David M. Williams | 1994-06-07 |