Granted Patent
Utility
US 4,700,744 · App. 06/837,776
Double shut-off fluid dispenser element
Inventors:
Christopher C. Rutter, Peter Thomsen
Patented Case
View Patent ↗
Granted: Oct 20, 1987
Filed: Mar 10, 1986
Inventors
Christopher C. Rutter
Peter Thomsen
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.