Frank P. Fahy

Fahy Simplex NIST.jpg

''fot. National Institute of Standards and Technology Digital Collections, Gaithersburg, MD 20899, license: attribution required'']]

Frank P. Fahy - inventor of Fahy permeameter, which was patented in 1912 (the patent was granted in 1916) and later Fahy Simplex permeameter patented in 1924.