| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 8 | |
| #2 | Switzerland | 8 | |
| #3 | Belgium | 4 | |
| #4 | Germany | 4 | |
| #5 | United States | 3 |
| # | Industry | |
|---|---|---|
| #1 | Measurement | |
| #2 | Control | |
| #3 | Audio-visual technology | |
| #4 | Machines | |
| #5 | Consumer goods | |
| #6 | Basic communication technologies | |
| #7 | Computer technology | |
| #8 | Medical technology |
| # | Technology | |
|---|---|---|
| #1 | Measuring volume | |
| #2 | Alarm systems | |
| #3 | Sound-producing devices | |
| #4 | Constructional instrument details | |
| #5 | Loudspeakers and microphones | |
| #6 | Unspecified technologies | |
| #7 | Implantable devices | |
| #8 | Code conversion | |
| #9 | Analysing materials | |
| #10 | Analogue computers |
| # | Name | Total Patents |
|---|---|---|
| #1 | Roth Wilfred | 19 |
| #2 | Wilfred Roth | 7 |
| #3 | Paul Dober Henderson | 1 |
| #4 | Stanley Robert Rich | 1 |
| #5 | Meeker C Irving | 1 |
| #6 | Beal Edward W | 1 |
| #7 | Edward William Beal | 1 |
| #8 | Rich Leonard G | 1 |
| #9 | Geary Rich Leonard | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4523590A | Method and device for reversible sterilization in mammals | |
| US3070790A | Acoustic transducers | |
| US3065455A | Detection apparatus | |
| CA669602A | Detection apparatus | |
| CA694976A | Gyroscopic mass flowmeters | |
| CA696159A | Liquid level indicator | |
| CA696152A | Gyroscopic mass flowmeter | |
| CA713298A | Gyroscopic mass flowmeters | |
| CA753774A | Integrating totalizer | |
| CA672961A | Transducers | |
| CA705550A | Temperature-regulated transducer |