| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 19 | |
| #2 | United States | 9 | |
| #3 | EPO (European Patent Office) | 7 | |
| #4 | Canada | 6 | |
| #5 | Germany | 2 | |
| #6 | Japan | 2 | |
| #7 | Switzerland | 1 | |
| #8 | France | 1 | |
| #9 | Italy | 1 | |
| #10 | Netherlands | 1 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Mechanical elements | |
| #3 | Machines | |
| #4 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Electric switches | |
| #2 | Safety devices | |
| #3 | Unspecified technologies | |
| #4 | Locks | |
| #5 | Venting or aerating devices | |
| #6 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Henville Michael I | 7 |
| #2 | Henville Michael Ian | 6 |
| #3 | Corfield John Courtney | 6 |
| #4 | Ruston Kenneth | 3 |
| #5 | Corfield John C | 3 |
| #6 | Bennett Geoffrey R | 2 |
| #7 | Kenesu Rasuton | 1 |
| #8 | Friendship Adrian F M | 1 |
| #9 | Friedship Adrian Francis Mervy | 1 |
| #10 | Bennett Geoffrey Richard | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB8725138D0 | Solenoid-operated valves | |
| GB8715125D0 | Solenoid-operated valves | |
| GB8705041D0 | Solenoid | |
| GB8701843D0 | Solenoid actuator | |
| GB8520992D0 | Calibrating components | |
| GB8511540D0 | Machinery security systems | |
| GB8411589D0 | Security mechanisms | |
| GB8313069D0 | Safety interlocks | |
| GB8310823D0 | Switches | |
| CA1139581A | Mountings for keys | |
| GB2057769A | Snap-action switches | |
| US4345125A | Snap action switches | |
| GB2057770A | Snap-action switches | |
| GB2047469A | Electric switch actuator | |
| GB2042048A | Keyoperated device | |
| GB1503327A | Electrical switches | |
| GB1513037A | Electrical switches | |
| GB1513823A | Safety device for guarded machinery | |
| GB1475070A | Safety devices |