| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 9 | |
| #2 | Canada | 3 |
| # | Industry | |
|---|---|---|
| #1 | Medical technology | |
| #2 | Consumer goods | |
| #3 | Measurement |
| # | Technology | |
|---|---|---|
| #1 | Live-saving devices | |
| #2 | Syringes | |
| #3 | Measuring volume |
| # | Name | Total Patents |
|---|---|---|
| #1 | Boothby Walter M | 12 |
| #2 | Bulbulian Arthur H | 7 |
| #3 | Lovelace William R | 4 |
| #4 | Randolph Lovelace William | 3 |
| Publication | Filing date | Title |
|---|---|---|
| US2452722A | Clinical mask for breathing and rebreathing mixtures of gases | |
| US2463473A | Flowmeter | |
| US2390236A | Portable field oxygen therapy apparatus | |
| US2360193A | Oxygen-delivering parachute escape outfit | |
| US2336979A | Aviation mask | |
| US2348277A | Oxygen mask | |
| US2228502A | Means for breathing mixtures of gases at low temperatures | |
| US2260701A | Oronasal mask | |
| US2241535A | Apparatus for delivering and permitting normal breathing of mixtures of gases | |
| CA397184A | Oronasal mask | |
| CA397183A | Gas mixture breathing apparatus | |
| CA397185A | Gas breathing device |