| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 16 | |
| #2 | Canada | 7 | |
| #3 | Germany | 1 | |
| #4 | EPO (European Patent Office) | 1 | |
| #5 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Audio-visual technology | |
| #2 | Measurement | |
| #3 | Control | |
| #4 | Machines | |
| #5 | Electrical machinery and energy | |
| #6 | Surface technology and coating |
| # | Technology | |
|---|---|---|
| #1 | Advertising | |
| #2 | Electronic time-pieces | |
| #3 | Alarm systems | |
| #4 | Display controls | |
| #5 | Layered products | |
| #6 | Unspecified technologies | |
| #7 | Unspecified technologies | |
| #8 | Measuring temperature | |
| #9 | Lighting device details | |
| #10 | Electromechanical clocks |
| # | Name | Total Patents |
|---|---|---|
| #1 | Justus William H | 6 |
| #2 | Caferro Edward M | 6 |
| #3 | Seibert Lloyd | 5 |
| #4 | Williams Charles M | 3 |
| #5 | Work Gerald L | 2 |
| #6 | Ellefsen George E | 2 |
| #7 | Sherwin Richard N | 2 |
| #8 | Ratcliffe Charles A | 1 |
| #9 | Martin Anthony | 1 |
| #10 | Dozer Bill E | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4843527A | Matrix lamp bank display and light filtering assembly | |
| CA1208010A | Matrix display | |
| CA1208009A | Matrix display | |
| EP0054336A1 | Matrix display | |
| US4380879A | Matrix display | |
| US4389804A | Matrix display | |
| US4115941A | Display and reset apparatus | |
| US4053340A | Method for producing display sign panel | |
| US4045895A | Display sign | |
| US3613275A | Sign module | |
| US3582937A | Display sign and controls | |
| US3197904A | Speed zone sign | |
| US3166742A | Control for lamp bank displays | |
| US2959881A | Display sign | |
| US3041595A | Display sign for alternately displaying time, temperature and date | |
| US2907995A | Display signs | |
| US3041596A | Display signs | |
| US2917733A | Display signs | |
| US2673976A | Display sign | |
| CA907321A | Sign module |