| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 2 | |
| #2 | Germany | 2 | |
| #3 | France | 2 | |
| #4 | United Kingdom | 2 | |
| #5 | United States | 2 | |
| #6 | Israel | 1 | |
| #7 | Japan | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Locks | |
| #2 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Fry Eric | 4 |
| #2 | Helenurm Kalju | 2 |
| #3 | Helenurm K | 1 |
| #4 | Eritsuku Furai | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB1524902A | Cylinder lock mechanisms | |
| CA1054390A | Cylinder lock mechanisms | |
| US3808853A | Adjustable key for cylinder locks |