Spirometer
Description:
Patent for "an improved spirometer, and has for its object to provide a simple, inexpensive, and efficient device of this character adapted for use by invalids, convalescents, and other persons for exercising the lungs and measuring and indicating the cubic capacity or volume of air expelled from the chest." (lines 8-15)
Date:
August 4, 1903
Creator:
Lyttleton, Henry Thomas
Item Type:
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Patent
Partner:
UNT Libraries Government Documents Department