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PFT history
PFT company history timeline
Wintrich MA, Virchow R, Von Bamberger H. 1854.
The physiological laboratory of the French military school at Joinville” by Jacques Boyer, Scientific American, May 8, 1915, page 293.
Spirometry, 1924, with a Galante Spirometer.
Op het vliegveld Soesterberg wordt in 1925 een begin gemaakt met de opleiding en het testen van aspirant vliegeniers/piloten.
A start on the Soesterberg Airport in 1925 made the training and testing aspiring aviators / pilots.
The FEV1, FEV1/VC ratio, and/or FEV1/forced vital capacity (FVC) ratio all came into existence after 1950.
The Honorable James A. Burke (left) and Doctor Benjamin Terres (right) measure respiration using a spirometer on Congressional Day in 1961 at the Harvard School of Public Health.
Spirometry with a Collins 13.5 Liter Respirometer, 1968.
• Rise of the electronic spirometer, 1970 onwards
Spirometry 1975: From The Herald, Arlington Heights, Illinois, March 19, 1975.
Spirometry, Collins Eagle II, 1984: Photo is from a sales brochure courtesy of James Sullivan, BA, RPFT, Supervisor, Pulmonary Laboratories, Memorial Sloan Kettering Cancer Center.
Standardization of spirometry-1987 update.
In 2004, the Japanese Respiratory Society issued an initial set of recommendations for the standardized measurement of VC, FVC, and the single-breath carbon monoxide-diffusing capacity.
In 2005, the American Thoracic Society (ATS) and European Respiratory Society (ERS) together published an updated set of standards for pulmonary function testing that could be applied more widely.
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PFT competitors
| Company name | Founded date | Revenue | Employee size | Job openings |
|---|---|---|---|---|
| AFT | 1916 | $199.9M | 345 | - |
| Service Employees International Union Local 504 | 1971 | $11.3M | 4 | - |
| CURE International | - | - | - | - |
| Arapahoe Libraries | 1966 | $14.0M | 250 | 5 |
| The Ark | 1971 | $1.1M | 50 | 31 |
| SIL International | 1934 | $56.0M | 1,390 | 7 |
| TOUCHSTONE SERVICES INC | 1996 | $2.9M | 153 | 1 |
| Yampa Valley Community Foundation | 1979 | $940,000 | 9 | - |
| Allegheny County Parks Foundation | 2007 | $999,999 | 30 | - |
| Baha'i National Center | - | $17.0M | 203 | - |
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PFT may also be known as or be related to Health and Welfare Fund Philadelphia Federation of Teachers Inc, PFT and Philadelphia Federation Of Teachers.