| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Austria | 1 | |
| #2 | Belgium | 1 | |
| #3 | Canada | 1 | |
| #4 | Switzerland | 1 | |
| #5 | Germany | 1 | |
| #6 | France | 1 | |
| #7 | Greece | 1 | |
| #8 | Ireland | 1 | |
| #9 | Italy | 1 | |
| #10 | Japan | 1 | |
| #11 | Netherlands | 1 | |
| #12 | Norway | 1 | |
| #13 | Portugal | 1 | |
| #14 | Sweden | 1 | |
| #15 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Consumer goods | |
| #2 | Machines | |
| #3 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Personal adornments | |
| #2 | Unspecified technologies | |
| #3 | Buttons, pins and buckles | |
| #4 | Nails |
| # | Name | Total Patents |
|---|---|---|
| #1 | Cagnato Ennio | 4 |
| #2 | Eniio Kaniyaato | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4097970A | Safety fastener | |
| CA1073638A | Safety fastener | |
| IE44923B1 | Safety fastener | |
| PT66467A | Security closure | |
| NL7704349A | Safety fastener for e.g. jewelry - has locking member slidable lengthwise between side walls of hollow casing, with notch which registers with casing openings (PT 2.5.78) | |
| JPS52127549A | Safety closing device |