| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 6 | |
| #2 | Canada | 2 | |
| #3 | United Kingdom | 2 | |
| #4 | France | 1 | |
| #5 | Sweden | 1 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Machines | |
| #3 | Basic communication technologies | |
| #4 | Textiles and paper |
| # | Technology | |
|---|---|---|
| #1 | Electric switches | |
| #2 | Unspecified technologies | |
| #3 | Typewriters | |
| #4 | Pulse technique |
| # | Name | Total Patents |
|---|---|---|
| #1 | Martin Carl E | 4 |
| #2 | Wright Duane H | 2 |
| #3 | Kerns F | 1 |
| #4 | Martin C | 1 |
| #5 | Meyer Stephen F | 1 |
| #6 | Weisenburger Lawrence P | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4160886A | Keyboards and methods of making keyboards | |
| US4085394A | Contactless key switch | |
| US3771636A | Space bar assembly | |
| US3626120A | Key-locking assembly | |
| US3467802A | Conductor apparatus for switch structure | |
| US3432624A | Shock resistant multiple switch assembly | |
| CA831126A | Shock resistant multiple switch assembly | |
| CA854805A | Conductor apparatus for switch structure |