US Patent Number
A pneumotachograph suitable for measuring flow rates of respiratory gases in small animals and comprising essentially a flow-resisting element which can be placed in series with a subject''s airway. The pressure drop across the resistive element is proportional to the rate of airflow and is linear over the range of flows which one normally would expect to encounter in small animals (0-2 liters/min.).
The University of Kentucky Research Foundation, Lexington, Ky.
Diamond, Louis and Lipscomb, William T., "Pneumotachograph" (1973). Pharmacology and Nutritional Sciences Faculty Patents. 37.