| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 5 | |
| #2 | France | 4 | |
| #3 | United Kingdom | 2 | |
| #4 | Germany | 1 |
| # | Industry | |
|---|---|---|
| #1 | Audio-visual technology | |
| #2 | Electrical machinery and energy | |
| #3 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Loudspeakers and microphones | |
| #2 | Capacitors and switching devices | |
| #3 | Clutches and brakes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Glen Robert Rodger | 5 |
| Publication | Filing date | Title |
|---|---|---|
| GB483487A | Improvements in or relating to electrical condensers | |
| GB489354A | Improvements in or relating to cones for loudspeakers and the like | |
| DE641428C | Coupling between two mutually inclined shafts by means of drivers that can be moved parallel to the shaft axes and are articulated at the kinks | |
| CA369497A | Ship's telephone | |
| CA368483A | Loudspeaker | |
| CA362978A | Loudspeaker | |
| CA353356A | Shaft coupling | |
| CA369448A | Loudspeaker |