Granted Patent
Utility
US 4,635,476 · App. 06/790,595
Fluid flow sensor
Inventor:
Joel E. Haynes
Patented Case
View Patent ↗
Granted: Jan 13, 1987
Filed: Oct 23, 1985
Inventor
Joel E. Haynes
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.