| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 9 | |
| #2 | Italy | 3 | |
| #3 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Packaging and shipping | |
| #3 | Machines | |
| #4 | Civil engineering | |
| #5 | Control |
| # | Technology | |
|---|---|---|
| #1 | Clutches and brakes | |
| #2 | Earth drilling | |
| #3 | Winches | |
| #4 | Milling | |
| #5 | Unspecified technologies | |
| #6 | Control or regulating systems |
| # | Name | Total Patents |
|---|---|---|
| #1 | Sommer Gordon M | 9 |
| #2 | Sommer Gordon Maurice | 2 |
| Publication | Filing date | Title |
|---|---|---|
| CA1209498A | Controlled clutch/brake unit | |
| IT8123582D0 | Clutch drive for heavy duty motor | |
| CA1190163A | Drive system | |
| CA1153320A | Brake unit | |
| CA1140060A | Clutch-brake unit | |
| CA1153449A | Drive system |