| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 3 | |
| #2 | Germany | 2 | |
| #3 | France | 2 | |
| #4 | Austria | 1 | |
| #5 | Australia | 1 | |
| #6 | Canada | 1 | |
| #7 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Optics |
| # | Technology | |
|---|---|---|
| #1 | Spectacles |
| # | Name | Total Patents |
|---|---|---|
| #1 | Zingarelli Dino | 3 |
| #2 | Smith John Douglas | 2 |
| #3 | Smith John D | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB1412364A | Spectacle frames | |
| AU6325173A | Improvements in or relating to spectacle frames | |
| FR1335996A | Advanced hinge for medical glasses | |
| GB947276A | Spectacle hinge joint | |
| GB858988A | Improvements in or relating to spectacle frames | |
| CA714738A | Spectacle hinge joint |