| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 7 | |
| #2 | United States | 5 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Unspecified technologies | |
| #2 | Locks | |
| #3 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Deutsch Leo E | 12 |
| Publication | Filing date | Title |
|---|---|---|
| US2024030A | Lock | |
| US2019400A | Key | |
| US2021443A | Lock mechanism | |
| US2060978A | Adjustable tumbler lock | |
| US2019399A | Key operable lock | |
| CA374612A | Key | |
| CA365134A | Key operable lock | |
| CA375843A | Tumbler lock | |
| CA365133A | Key operable lock | |
| CA365131A | Lock mechanism | |
| CA365132A | Lock key | |
| CA365130A | Lock key |