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Thomas Edison ; 1922
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| Number | Title | Issue Date |
| 4047844 | Blood pumping system A blood pumping system has a pair of integral flexible bodies each provided with an inlet and an outlet and disposed in open top cavities in a housing. The cavities have extensions holding inlet valves and outlet valves for opening and closing the inlets ... | 09/13/1977 |
| 3996010 | Breathing gas analyzer A breathing gas analyzer, especially for pulmonary use, has a frame supporting a centrally mounted radiation or analyzing chamber of about 1 and one-half to 25 millimeters (0.06 to 1.0 inches) substantially uniform inside diameter, having a circular-cylin... | 12/07/1976 |
| 3993050 | Spirometer A spirometer has a housing with a wall having an opening therein. A bag made up of a first, stiff sheet and a second, flexible sheet having an exhaust slit therein as well as an inlet tube is supported within the housing with the first sheet lying against... | 11/23/1976 |
| 3985131 | Infant and pediatric ventilator A volume ventilating respirator, especially for infant and pediatric use, has a pair of different size volume chambers with means for selecting one or the other for specific use. There is a selector affording a choice of several different ventilating mode... | 10/12/1976 |
| 3982095 | Respiratory humidifier A respiratory humidifier has a base with a thermally controlled heater therein effective to heat a first transfer surface on the top of the base. Removably pressed against the first transfer surface is a second transfer surface forming the bottom of a con... | 09/21/1976 |
| 3951143 | Intermittent demand ventilator A volume ventilator effective to give a patient successive inhalations and exhalations at timed intervals is responsive to the patient's effort to inhale and at selected times gives the patient a deep breath synchronized with the patient's effort to inhal... | 04/20/1976 |
| 3951607 | Gas analyzer A gas analyzer especially for pulmonary use has a frame supporting a centrally mounted radiation chamber of about 10 to 30 millimeters (0.4 to 1.2 inches) substantially uniform inside diameter, having a circular-cylindrical glass wall closed by molybdenum... | 04/20/1976 |