| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 4 | |
| #2 | France | 3 | |
| #3 | United Kingdom | 3 | |
| #4 | Germany | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Control | |
| #3 | Machines | |
| #4 | Telecommunications |
| # | Technology | |
|---|---|---|
| #1 | Alarm systems | |
| #2 | Locks | |
| #3 | Unspecified technologies | |
| #4 | Telephonic communication | |
| #5 | Bolts for doors or windows |
| # | Name | Total Patents |
|---|---|---|
| #1 | Sugiyama Kazuo | 5 |
| Publication | Filing date | Title |
|---|---|---|
| FR1525513A | Installation comprising an electric locking device and an associated fire alarm device | |
| FR1505279A | Electric locking device associated with an intercom | |
| FR1505278A | Electric locking device | |
| CA846667A | Manually unlocking device of electric lock | |
| CA788026A | Electrical locking device combined with an interphone system | |
| CA815418A | Electrical locking device | |
| CA854380A | Combination of electrical lock system and fire alarm system |